<SEC-DOCUMENT>0001193125-22-003467.txt : 20220106
<SEC-HEADER>0001193125-22-003467.hdr.sgml : 20220106
<ACCEPTANCE-DATETIME>20220106150402
ACCESSION NUMBER:		0001193125-22-003467
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20220106
ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20220106
DATE AS OF CHANGE:		20220106

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADTRAN INC
		CENTRAL INDEX KEY:			0000926282
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				630918200
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24612
		FILM NUMBER:		22514605

	BUSINESS ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806
		BUSINESS PHONE:		256-963-8220

	MAIL ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d222874d8k.htm
<DESCRIPTION>8-K
<TEXT>
<XBRL>
<?xml version="1.0" encoding="utf-8" ?>
<html xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31" xmlns:us-types="http://fasb.org/us-types/2020-01-31" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:adtn="http://www.adtran.com/20220106" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>8-K</title>
<meta http-equiv="Content-Type" content="text/html" />
</head>
   <body><div style="display:none"> <ix:header> <ix:hidden> <ix:nonNumeric id="Hidden_dei_EntityRegistrantName" name="dei:EntityRegistrantName" contextRef="duration_2022-01-06_to_2022-01-06">ADTRAN INC</ix:nonNumeric> <ix:nonNumeric name="dei:AmendmentFlag" contextRef="duration_2022-01-06_to_2022-01-06">false</ix:nonNumeric> <ix:nonNumeric id="Hidden_dei_EntityCentralIndexKey" name="dei:EntityCentralIndexKey" contextRef="duration_2022-01-06_to_2022-01-06">0000926282</ix:nonNumeric> </ix:hidden> <ix:references> <link:schemaRef xlink:type="simple" xlink:href="adtn-20220106.xsd" xlink:arcrole="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase"></link:schemaRef> </ix:references> <ix:resources> <xbrli:context id="duration_2022-01-06_to_2022-01-06"> <xbrli:entity> <xbrli:identifier scheme="http://www.sec.gov/CIK">0000926282</xbrli:identifier> </xbrli:entity> <xbrli:period> <xbrli:startDate>2022-01-06</xbrli:startDate> <xbrli:endDate>2022-01-06</xbrli:endDate> </xbrli:period> </xbrli:context> </ix:resources> </ix:header> </div> <div style="text-align:center"> <div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto"> <p style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</p> <p style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</p> <p style="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">UNITED STATES</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">SECURITIES AND EXCHANGE COMMISSION</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">WASHINGTON, D.C. 20549</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">FORM <span style="white-space:nowrap"><ix:nonNumeric name="dei:DocumentType" contextRef="duration_2022-01-06_to_2022-01-06">8-K</ix:nonNumeric></span></p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">CURRENT REPORT</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Pursuant to Section&#160;13 or 15(d)</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">of the Securities Exchange Act of 1934</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Date of Report (Date of earliest event reported): <ix:nonNumeric name="dei:DocumentPeriodEndDate" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt:datemonthdayyearen">January&#160;6, 2022</ix:nonNumeric></p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman;font-weight:bold;text-align:center"> <span style=" -sec-ix-hidden:Hidden_dei_EntityRegistrantName">ADTRAN, Inc.</span> </p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Exact name of Registrant as Specified in Its Charter)</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:8pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:34%"></td>
<td style="vertical-align:bottom"></td>
<td style="width:32%"></td>
<td style="vertical-align:bottom;width:1%"></td>
<td style="width:32%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:stateprovnameen">Delaware</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityFileNumber" contextRef="duration_2022-01-06_to_2022-01-06">000-24612</ix:nonNumeric></span></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityTaxIdentificationNumber" contextRef="duration_2022-01-06_to_2022-01-06">63-0918200</ix:nonNumeric></span></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(State or Other Jurisdiction</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">of Incorporation)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Commission</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">File Number)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(IRS Employer</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Identification No.)</p></td></tr></table> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:50%"></td>
<td style="vertical-align:bottom;width:1%"></td>
<td style="width:48%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityAddressAddressLine1" contextRef="duration_2022-01-06_to_2022-01-06">901 Explorer Boulevard</ix:nonNumeric></p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityAddressCityOrTown" contextRef="duration_2022-01-06_to_2022-01-06">Huntsville</ix:nonNumeric>, <ix:nonNumeric name="dei:EntityAddressStateOrProvince" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:stateprovnameen">Alabama</ix:nonNumeric></p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:bottom"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressPostalZipCode" contextRef="duration_2022-01-06_to_2022-01-06">35806-2807</ix:nonNumeric></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(Address of Principal Executive Offices)</span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(Zip Code)</span></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">Registrant&#8217;s Telephone Number, Including Area Code: <ix:nonNumeric name="dei:CityAreaCode" contextRef="duration_2022-01-06_to_2022-01-06">(256)</ix:nonNumeric> <span style="white-space:nowrap"><ix:nonNumeric name="dei:LocalPhoneNumber" contextRef="duration_2022-01-06_to_2022-01-06">963-8000</ix:nonNumeric></span></p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">Not Applicable</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Former Name or Former Address, if Changed Since Last Report)</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Check the appropriate box below if the Form <span style="white-space:nowrap">8-K</span> filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:WrittenCommunications" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:boolballotbox">&#9746;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:SolicitingMaterial" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Soliciting material pursuant to Rule <span style="white-space:nowrap">14a-12</span> under the Exchange Act (17 CFR <span style="white-space:nowrap">240.14a-12)</span></p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:PreCommencementTenderOffer" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left"><span style="white-space:nowrap">Pre-commencement</span> communications pursuant to Rule <span style="white-space:nowrap">14d-2(b)</span> under the Exchange Act (17 CFR <span style="white-space:nowrap">240.14d-2(b))</span></p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:PreCommencementIssuerTenderOffer" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left"><span style="white-space:nowrap">Pre-commencement</span> communications pursuant to Rule <span style="white-space:nowrap">13e-4(c)</span> under the Exchange Act (17 CFR <span style="white-space:nowrap">240.13e-4(c))</span></p></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Securities registered pursuant to Section&#160;12(b) of the Act:</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:8pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:34%"></td>
<td style="vertical-align:bottom"></td>
<td style="width:32%"></td>
<td style="vertical-align:bottom;width:1%"></td>
<td style="width:32%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom;white-space:nowrap"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Title of each class</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Trading</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Symbol</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Name of exchange</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">on which registered</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><ix:nonNumeric name="dei:Security12bTitle" contextRef="duration_2022-01-06_to_2022-01-06">Common Stock, Par Value $0.01</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><ix:nonNumeric name="dei:TradingSymbol" contextRef="duration_2022-01-06_to_2022-01-06">ADTN</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><ix:nonNumeric name="dei:SecurityExchangeName" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:exchnameen">The NASDAQ Global Select Market</ix:nonNumeric></span></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#160;230.405 of this chapter) or Rule <span style="white-space:nowrap">12b-2</span> of the Securities Exchange Act of 1934 <span style="white-space:nowrap">(&#167;&#160;240.12b-2</span> of this chapter).</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Emerging growth company&#160;&#160;<ix:nonNumeric name="dei:EntityEmergingGrowthCompany" contextRef="duration_2022-01-06_to_2022-01-06" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#160;13(a) of the Exchange Act.&#160;&#160;&#9744;</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <p style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</p> <p style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</p></div></div>

<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%" />

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">

<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:11%;vertical-align:top" align="left"><span style="font-weight:bold">Item&#160;5.07</span></td>
<td align="left" style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:left">Submission of Matters to a Vote of Security Holders. </p></td></tr></table> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">On January&#160;6, 2022, ADTRAN, Inc., a Delaware corporation (the &#8220;Company&#8221;), held a special meeting of its stockholders (the &#8220;Special Meeting&#8221;). At the Special Meeting, a total of 42,069,014 (85.68%) of the Company&#8217;s issued and outstanding shares of common stock held of record as of November&#160;16, 2021, the record date for the Special Meeting, were present either in person (by virtual presence online at the virtual Special Meeting) or by proxy, which constituted a quorum. The Company&#8217;s stockholders voted on the following proposals at the Special Meeting, each of which is described in more detail in the Company&#8217;s definitive proxy statement/prospectus filed with the Securities and Exchange Commission (the &#8220;SEC&#8221;) on December&#160;2, 2021, as amended and supplemented to date (the &#8220;Proxy Statement&#8221;). Each of the proposals was approved at the Special Meeting. The final vote tabulation for each proposal is set forth below. </p> <p style="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold">Proposal 1 &#8211; Business Combination </p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">To adopt the Business Combination Agreement, dated as of August&#160;30, 2021, by and among the Company, Acorn HoldCo, Inc., Acorn MergeCo, Inc., and ADVA Optical Networking SE, pursuant to which, among other things, ADTRAN, Inc. and ADVA Optical Networking SE agreed to combine their businesses through a merger and an exchange offer, respectively, and become subsidiaries of Acorn HoldCo, Inc. (the &#8220;Business Combination&#8221;). </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:84%;border:0;margin:0 auto">


<tr>

<td style="width:24%"></td>

<td style="vertical-align:bottom"></td>
<td style="width:24%"></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:25%"></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:24%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom;white-space:nowrap"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">For</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">Against</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">Abstain</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center"><span style="white-space:nowrap">Broker&#160;Non-Votes</span></p></td></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt;background-color:#cceeff">
<td style="vertical-align:bottom" align="center">41,731,502</td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">43,891</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">293,621</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">0</p></td></tr>
</table> <p style="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold">Proposal 2 - Advisory Vote Regarding Compensation of the Company&#8217;s Named Executive Officers </p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">To approve, on a <span style="white-space:nowrap">non-binding</span> advisory basis, the compensation that may become payable to the Company&#8217;s named executive officers in connection with the Business Combination, as disclosed in the Proxy Statement. </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:84%;border:0;margin:0 auto">


<tr>

<td style="width:24%"></td>

<td style="vertical-align:bottom"></td>
<td style="width:24%"></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:25%"></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:24%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom;white-space:nowrap"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">For</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">Against</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">Abstain</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td align="center" style="border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center"><span style="white-space:nowrap">Broker&#160;Non-Votes</span></p></td></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt;background-color:#cceeff">
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">41,167,232</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">615,583</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">286,199</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom" align="center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;text-align:center">0</p></td></tr>
</table> <p style="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:11%;vertical-align:top" align="left"><span style="font-weight:bold">Item&#160;7.01</span></td>
<td align="left" style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:left">Regulation FD Disclosure. </p></td></tr></table> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">On January&#160;6, 2022, the Company issued a press release announcing the results of the Special Meeting. A copy of the press release is attached as Exhibit&#160;99.1 hereto and incorporated by reference herein. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The information in this Item 7.01, and in Exhibit 99.1 attached hereto, shall not be deemed &#8220;filed&#8221; for purposes of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. </p> <p style="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:11%;vertical-align:top" align="left"><span style="font-weight:bold">Item&#160;9.01</span></td>
<td align="left" style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:left">Financial Statements and Exhibits. </p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top" align="left">(d)</td>
<td align="left" style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Exhibits. </p></td></tr></table> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:100%;border:0;margin:0 auto">


<tr>

<td></td>

<td style="vertical-align:bottom;width:5%"></td>
<td style="width:92%"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style="vertical-align:bottom;white-space:nowrap" align="center"> <p style=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; display:inline-block; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Exhibit<br />Number</p></td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:bottom;white-space:nowrap"> <p style=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; display:table-cell; font-size:8pt; font-family:Times New Roman;font-weight:bold">Description</p></td></tr>


<tr style="font-size:1pt">
<td style="height:6pt"></td>
<td style="height:6pt" colspan="2"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">99.1</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top"><a href="d222874dex991.htm">Press release, dated January&#160;6, 2022 </a></td></tr>
<tr style="font-size:1pt">
<td style="height:6pt"></td>
<td style="height:6pt" colspan="2"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">104</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top">Cover Page Interactive Data File (embedded within the Inline XBRL document).</td></tr>
</table>
</div></div>



<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%" />

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">
 <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">SIGNATURES </p> <p style="margin-top:12pt; margin-bottom:0pt; text-indent:9%; font-size:10pt; font-family:Times New Roman">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:100%;border:0">


<tr>

<td style="width:47%"></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:4%"></td>

<td style="vertical-align:bottom"></td>
<td></td>

<td style="vertical-align:bottom;width:1%"></td>
<td style="width:46%"></td></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top">Date: January&#160;6, 2022</td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom;white-space:nowrap"><span style="font-weight:bold">ADTRAN, Inc.</span></td></tr>
<tr style="font-size:1pt">
<td style="height:12pt"></td>
<td style="height:12pt" colspan="2"></td>
<td style="height:12pt" colspan="2"></td>
<td style="height:12pt" colspan="2"></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">By: /s/ Michael Foliano</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom">Michael Foliano</td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Senior Vice President of Finance and</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">Chief Financial Officer</p></td></tr>
</table>
</div></div>

</body></html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d222874dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
<HTML><HEAD>
<TITLE>EX-99.1</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Exhibit 99.1 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>ADTRAN Stockholders Overwhelmingly Approve Business </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Combination with ADVA Optical Networking SE </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">HUNTSVILLE, Ala.&#151;(January&nbsp;6, 2022) &#150;&nbsp;ADTRAN, Inc., (NASDAQ: ADTN) today announced that its stockholders have approved the business
combination with ADVA Optical Networking SE by an overwhelming majority. In a Special Meeting of Stockholders held earlier today, a quorum was achieved with 85% of ADTRAN&#146;s outstanding shares represented. Of the voted shares, over 99% were
voted in favor of the transaction. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Today&#146;s announcement is the latest milestone towards a successful closing. The transaction has already been
approved unanimously by the ADTRAN Board of Directors, approved by the ADVA Management and Supervisory Boards, who also have recommended to ADVA shareholders to accept the offer. The transaction has also received the strong support of ADVA&#146;s
largest shareholder, Egora, which entered into an irrevocable commitment to tender into the offer shares representing 13.7% of ADVA&#146;s outstanding shares, and received clearance or confirmation that public review was not needed by all required
antitrust organizations. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The next major milestone will be the close of the initial acceptance period for the tender of ADVA shares at midnight (CET) on
January&nbsp;12, 2022, and for the combination to be successful, at least 70% of the ADVA shares must be tendered by this time. The parties also continue to work with the relevant authorities to obtain the required foreign direct investment
approvals and are confident that such approvals will be obtained in due course. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B><U>About ADTRAN </U></B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">At ADTRAN, Inc., we believe amazing things happen when people connect. From the cloud edge to the subscriber edge, we help communications service providers
around the world manage and scale services that connect people, places and things to advance human progress. Whether rural or urban, domestic or international, telco or cable, enterprise or residential&#151;ADTRAN solutions optimize existing
technology infrastructures and create new, multi-gigabit platforms that leverage cloud economics, data analytics, machine learning and open ecosystems&#151;the future of global networking. Find more
at&nbsp;<U>ADTRAN.com</U>,&nbsp;<U>LinkedI</U><U>n</U>&nbsp;and&nbsp;<U>Twitter</U>. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">ADTRAN Rhonda Lambert, <U>investor@adtran.com</U> </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Important Information for Investors and Stockholders </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This announcement is neither an offer to purchase nor a solicitation of an offer to sell shares in ADVA. The voluntary public takeover offer (Offer) itself, as
well as its terms and conditions and further provisions concerning the Offer, are set forth in the published offer document (Offer Document). Shareholders of ADVA are strongly advised to thoroughly read the Offer Document and all other relevant
documents regarding the Offer. </P>
</DIV></Center>


<p style="margin-top:1em; margin-bottom:0em; page-break-before:always">
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Furthermore, this communication does not constitute an offer to sell or the solicitation of an offer to buy
any securities or a solicitation of any vote or approval. It does not constitute a prospectus or prospectus equivalent document. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section&nbsp;10 of
the U.S. Securities Act of 1933, as amended. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In connection with the proposed transaction between ADTRAN and ADVA, Acorn HoldCo has filed a Registration
Statement on Form <FONT STYLE="white-space:nowrap">S-4</FONT> with the SEC (supplemented by ADTRAN&#146;s Form <FONT STYLE="white-space:nowrap">8-K</FONT> filed with the SEC on December&nbsp;28, 2021), which includes (1)&nbsp;a proxy statement of
ADTRAN that also constitutes a preliminary prospectus for Acorn HoldCo and (2)&nbsp;an offering prospectus of Acorn HoldCo to be used in connection with Acorn HoldCo&#146;s offer to acquire ADVA shares held by U.S. holders. The registration
statement was declared effective by the SEC on December&nbsp;2, 2021 and ADTRAN mailed the definitive proxy statement/prospectus to its stockholders in connection with the vote to approve the merger of ADTRAN and an indirect wholly-owned subsidiary
of Acorn HoldCo. Acorn HoldCo has also filed the Offer Document with the German Federal Financial Supervisory Authority (<I>Bundesanstalt f&uuml;r Finanzdienstleistungsaufsicht</I>, or BaFin), which has been approved by BaFin and has been published.
The consummation of any transaction will be subject to regulatory approvals and other customary closing conditions. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">INVESTORS AND SECURITY HOLDERS OF
ADTRAN AND ADVA ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS, THE OFFER DOCUMENT AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The Offer will exclusively be subject to the laws of the Federal Republic of Germany and certain applicable provisions of securities laws of the United States
of America. Any agreement that is entered into as a result of accepting the Offer will be exclusively governed by the laws of the Federal Republic of Germany and is to be interpreted in accordance with such laws. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Investors and security holders may obtain free copies of the definitive proxy statement/prospectus and other documents filed with the SEC by ADTRAN and Acorn
HoldCo through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by ADTRAN will be available free of charge at https://investors.adtran.com/ and under the heading &#147;SEC Filings&#148;.
Furthermore, the German language version of the Offer Document has been published by way of announcement on the internet at https://acorn-offer.com/ and by keeping available copies free of charge at the settlement agent. You are also able to obtain
a copy of the <FONT STYLE="white-space:nowrap">non-binding</FONT> English translation of the Offer Document, which has not been reviewed by BaFin, on the internet at<B> </B>https://acorn-offer.com/. </P>
</DIV></Center>


<p style="margin-top:1em; margin-bottom:0em; page-break-before:always">
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Participants in the Solicitation </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">ADTRAN and certain of its directors and executive officers and employees may be considered participants in the solicitation of proxies from the shareholders of
ADTRAN in respect of the business combination. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of the shareholders of ADTRAN in connection with the proposed business combination,
including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in the proxy statement/prospectus filed with the SEC. Information regarding the Company&#146;s directors and executive officers is
contained in the Company&#146;s Annual Report on Form <FONT STYLE="white-space:nowrap">10-K</FONT> for the fiscal year ended December&nbsp;31, 2020 filed with the SEC. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Cautionary Note Regarding Forward-Looking Statements </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This press release contains forward-looking statements within the meaning of Section&nbsp;27A of the U.S. Securities Act of 1933, as amended, and
Section&nbsp;21E of the United States Securities Exchange Act of 1934, as amended. You can generally identify forward-looking statements by the use of forward-looking terminology such as &#147;anticipate,&#148; &#147;believe,&#148;
&#147;continue,&#148; &#147;could,&#148; &#147;estimate,&#148; &#147;expect,&#148; &#147;explore,&#148; &#147;evaluate,&#148; &#147;intend,&#148; &#147;may,&#148; &#147;might,&#148; &#147;plan,&#148; &#147;potential,&#148; &#147;predict,&#148;
&#147;project,&#148; &#147;seek,&#148; &#147;should,&#148; or &#147;will,&#148; or the negative thereof or other variations thereon or comparable terminology. These forward-looking statements are only predictions and involve known and unknown risks
and uncertainties, many of which are beyond ADTRAN and ADVA&#146;s control. These forward-looking statements include, but are not limited to, statements regarding benefits of the proposed business combination, integration plans and expected
synergies, and anticipated future growth, financial and operating performance and results. Forward-looking statements involve risks and uncertainties that may cause actual results to be materially different from the results predicted or expected. No
assurance can be given that these forward-looking statements will prove accurate and correct, or that projected or anticipated future results will be achieved. Factors that could cause actual results to differ materially from those indicated in any
forward looking statement include, but are not limited to: the expected timing and likelihood of the completion of the contemplated business combination, including the timing, receipt and terms and conditions of any required governmental and
regulatory approvals of the contemplated business combination that could reduce anticipated benefits or cause the parties to abandon the transaction; the occurrence of any event, change or other circumstances that could give rise to the termination
of the business combination agreement; the ability to successfully complete the proposed business combination; regulatory or other limitations imposed as a result of the proposed business combination; the success of the business following the
proposed business combination; the ability to successfully integrate the ADTRAN and ADVA businesses; the possibility that the requisite number of ADVA shares may not be tendered in the public offer; the risk that the parties may not be able to
satisfy the conditions to closing of the proposed business combination in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the proposed business combination; the risk that the
announcement or consummation of the proposed business combination could have adverse effects on the market price of ADTRAN&#146;s common stock or ADVA&#146;s common shares or the ability of ADTRAN and </P>
</DIV></Center>


<p style="margin-top:1em; margin-bottom:0em; page-break-before:always">
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">ADVA to retain customers, retain or hire key personnel, maintain relationships with their respective
suppliers and customers, and on their operating results and businesses generally; the risk that Acorn HoldCo may be unable to achieve expected synergies or that it may take longer or be more costly than expected to achieve those synergies; the risk
of fluctuations in revenue due to lengthy sales and approval process required by major and other service providers for new products; the risk posed by potential breaches of information systems and cyber-attacks; the risks that ADTRAN, ADVA or the
post-combination company may not be able to effectively compete, including through product improvements and development; and such other factors as are set forth in ADVA&#146;s annual and interim financial reports made publicly available and
ADTRAN&#146;s and Acorn HoldCo&#146;s public filings made with the SEC from time to time, including but not limited to those described under the headings &#147;Risk Factors&#148; and &#147;Forward-Looking Statements&#148; in ADTRAN&#146;s Form <FONT
STYLE="white-space:nowrap">10-K</FONT> for the fiscal year ended December&nbsp;31, 2020 and ADTRAN&#146;s Form <FONT STYLE="white-space:nowrap">10-Q</FONT> for the quarterly period ended September&nbsp;30, 2021, which are available via the
SEC&#146;s website at www.sec.gov. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The foregoing list of risk factors is not exhaustive. These risks, as well as other risks associated with the
contemplated business combination, are more fully discussed in the proxy statement/prospectus and the offering prospectus that are included in the Registration Statement on Form <FONT STYLE="white-space:nowrap">S-4</FONT> that has been filed by
Acorn HoldCo with the SEC and in the Offer Document that has been filed by Acorn HoldCo with BaFin and that has been published in connection with the contemplated business combination, as well as in any prospectuses or supplements. In light of these
risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than ADTRAN, ADVA or Acorn HoldCo has described. All such factors are difficult
to predict and beyond our control. All forward-looking statements included in this document are based upon information available to ADTRAN, ADVA and Acorn HoldCo on the date hereof, and each of ADTRAN, ADVA and Acorn HoldCo disclaims and does not
undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>### </B></P>
</DIV></Center>

</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>adtn-20220106.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20210621.2 -->
<!-- Creation date: 1/7/2022 1:01:49 AM Eastern Time -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:us-types="http://fasb.org/us-types/2020-01-31"
  xmlns:adtn="http://www.adtran.com/20220106"
  xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"

  attributeFormDefault="unqualified"
  elementFormDefault="qualified"
  targetNamespace="http://www.adtran.com/20220106"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
    <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2020-01-31" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />

    <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
    <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="adtn-20220106_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="adtn-20220106_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>adtn-20220106_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20210621.2 -->
<!-- Creation date: 1/7/2022 1:01:49 AM Eastern Time -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cover [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Written Communications</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Written Communications</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Soliciting Material</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Soliciting Material</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Issuer Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Issuer Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security 12b Title</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security 12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
  </link:labelLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>adtn-20220106_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20210621.2 -->
<!-- Creation date: 1/7/2022 1:01:49 AM Eastern Time -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
    xmlns:link="http://www.xbrl.org/2003/linkbase"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
    xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="adtn-20220106.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityRegistrantName" order="22.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_AmendmentFlag" order="23.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityCentralIndexKey" order="24.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentType" order="26.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentPeriodEndDate" order="27.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityIncorporationStateCountryCode" order="28.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityFileNumber" order="29.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityTaxIdentificationNumber" order="30.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressAddressLine1" order="31.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressCityOrTown" order="32.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressStateOrProvince" order="33.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressPostalZipCode" order="34.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_CityAreaCode" order="35.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_LocalPhoneNumber" order="36.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_WrittenCommunications" order="37.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SolicitingMaterial" order="38.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementTenderOffer" order="39.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementIssuerTenderOffer" order="40.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_Security12bTitle" order="41.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_TradingSymbol" order="42.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SecurityExchangeName" order="43.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityEmergingGrowthCompany" order="44.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </link:presentationLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>6
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.21.4</span><table class="report" border="0" cellspacing="2" id="idm140609924640200">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Jan. 06, 2022</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Cover [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">ADTRAN INC<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000926282<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Jan.  06,  2022<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">DE<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">000-24612<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">63-0918200<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">901 Explorer Boulevard<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Huntsville<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">AL<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">35806-2807<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">(256)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">963-8000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">true<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre Commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre Commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Security 12b Title</a></td>
<td class="text">Common Stock, Par Value $0.01<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">ADTN<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SolicitingMaterial</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_WrittenCommunications</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>7
<FILENAME>d222874d8k_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="adtn-20220106.xsd" xlink:type="simple"/>
    <context id="duration_2022-01-06_to_2022-01-06">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000926282</identifier>
        </entity>
        <period>
            <startDate>2022-01-06</startDate>
            <endDate>2022-01-06</endDate>
        </period>
    </context>
    <dei:EntityRegistrantName
      contextRef="duration_2022-01-06_to_2022-01-06"
      id="Hidden_dei_EntityRegistrantName">ADTRAN INC</dei:EntityRegistrantName>
    <dei:AmendmentFlag contextRef="duration_2022-01-06_to_2022-01-06">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2022-01-06_to_2022-01-06"
      id="Hidden_dei_EntityCentralIndexKey">0000926282</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2022-01-06_to_2022-01-06">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2022-01-06_to_2022-01-06">2022-01-06</dei:DocumentPeriodEndDate>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2022-01-06_to_2022-01-06">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2022-01-06_to_2022-01-06">000-24612</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2022-01-06_to_2022-01-06">63-0918200</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2022-01-06_to_2022-01-06">901 Explorer Boulevard</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="duration_2022-01-06_to_2022-01-06">Huntsville</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2022-01-06_to_2022-01-06">AL</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2022-01-06_to_2022-01-06">35806-2807</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2022-01-06_to_2022-01-06">(256)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2022-01-06_to_2022-01-06">963-8000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2022-01-06_to_2022-01-06">true</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2022-01-06_to_2022-01-06">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2022-01-06_to_2022-01-06">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2022-01-06_to_2022-01-06">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle contextRef="duration_2022-01-06_to_2022-01-06">Common Stock, Par Value $0.01</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="duration_2022-01-06_to_2022-01-06">ADTN</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="duration_2022-01-06_to_2022-01-06">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2022-01-06_to_2022-01-06">false</dei:EntityEmergingGrowthCompany>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>8
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 Financial_Report.xlsx
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M"H[<8R6,<6*T_C6"R0_L?@!02P,$%     @ @'@F5!PX9>H_ 0  / (   \
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M<F]P<R]A<' N>&UL4$L! A0#%     @ @'@F5"3PVO?N    *P(  !$
M         ( !KP   &1O8U!R;W!S+V-O<F4N>&UL4$L! A0#%     @ @'@F
M5)E<G",0!@  G"<  !,              ( !S $  'AL+W1H96UE+W1H96UE
M,2YX;6Q02P$"% ,4    " " >"94"GCP1C4$   V$   &
M@($-"   >&PO=V]R:W-H965T<R]S:&5E=#$N>&UL4$L! A0#%     @ @'@F
M5)^@&_"Q @  X@P   T              ( !> P  'AL+W-T>6QE<RYX;6Q0
M2P$"% ,4    " " >"94EXJ[',     3 @  "P              @ %4#P
M7W)E;',O+G)E;'-02P$"% ,4    " " >"94'#AEZC\!   \ @  #P
M        @ $]$   >&PO=V]R:V)O;VLN>&UL4$L! A0#%     @ @'@F5"0>
MFZ*M    ^ $  !H              ( !J1$  'AL+U]R96QS+W=O<FMB;V]K
M+GAM;"YR96QS4$L! A0#%     @ @'@F5&60>9(9 0  SP,  !,
M     ( !CA(  %M#;VYT96YT7U1Y<&5S72YX;6Q02P4&      D "0 ^ @
&V!,

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>9
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
// Edgar(tm) Renderer was created by staff of the U.S. Securities and Exchange Commission.  Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.
var Show={};Show.LastAR=null,Show.showAR=function(a,r,w){if(Show.LastAR)Show.hideAR();var e=a;while(e&&e.nodeName!='TABLE')e=e.nextSibling;if(!e||e.nodeName!='TABLE'){var ref=((window)?w.document:document).getElementById(r);if(ref){e=ref.cloneNode(!0);
e.removeAttribute('id');a.parentNode.appendChild(e)}}
if(e)e.style.display='block';Show.LastAR=e};Show.hideAR=function(){Show.LastAR.style.display='none'};Show.toggleNext=function(a){var e=a;while(e.nodeName!='DIV')e=e.nextSibling;if(!e.style){}else if(!e.style.display){}else{var d,p_;if(e.style.display=='none'){d='block';p='-'}else{d='none';p='+'}
e.style.display=d;if(a.textContent){a.textContent=p+a.textContent.substring(1)}else{a.innerText=p+a.innerText.substring(1)}}}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>10
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
/* Updated 2009-11-04 */
/* v2.2.0.24 */

/* DefRef Styles */
..report table.authRefData{
	background-color: #def;
	border: 2px solid #2F4497;
	font-size: 1em;
	position: absolute;
}

..report table.authRefData a {
	display: block;
	font-weight: bold;
}

..report table.authRefData p {
	margin-top: 0px;
}

..report table.authRefData .hide {
	background-color: #2F4497;
	padding: 1px 3px 0px 0px;
	text-align: right;
}

..report table.authRefData .hide a:hover {
	background-color: #2F4497;
}

..report table.authRefData .body {
	height: 150px;
	overflow: auto;
	width: 400px;
}

..report table.authRefData table{
	font-size: 1em;
}

/* Report Styles */
..pl a, .pl a:visited {
	color: black;
	text-decoration: none;
}

/* table */
..report {
	background-color: white;
	border: 2px solid #acf;
	clear: both;
	color: black;
	font: normal 8pt Helvetica, Arial, san-serif;
	margin-bottom: 2em;
}

..report hr {
	border: 1px solid #acf;
}

/* Top labels */
..report th {
	background-color: #acf;
	color: black;
	font-weight: bold;
	text-align: center;
}

..report th.void	{
	background-color: transparent;
	color: #000000;
	font: bold 10pt Helvetica, Arial, san-serif;
	text-align: left;
}

..report .pl {
	text-align: left;
	vertical-align: top;
	white-space: normal;
	width: 200px;
	white-space: normal; /* word-wrap: break-word; */
}

..report td.pl a.a {
	cursor: pointer;
	display: block;
	width: 200px;
	overflow: hidden;
}

..report td.pl div.a {
	width: 200px;
}

..report td.pl a:hover {
	background-color: #ffc;
}

/* Header rows... */
..report tr.rh {
	background-color: #acf;
	color: black;
	font-weight: bold;
}

/* Calendars... */
..report .rc {
	background-color: #f0f0f0;
}

/* Even rows... */
..report .re, .report .reu {
	background-color: #def;
}

..report .reu td {
	border-bottom: 1px solid black;
}

/* Odd rows... */
..report .ro, .report .rou {
	background-color: white;
}

..report .rou td {
	border-bottom: 1px solid black;
}

..report .rou table td, .report .reu table td {
	border-bottom: 0px solid black;
}

/* styles for footnote marker */
..report .fn {
	white-space: nowrap;
}

/* styles for numeric types */
..report .num, .report .nump {
	text-align: right;
	white-space: nowrap;
}

..report .nump {
	padding-left: 2em;
}

..report .nump {
	padding: 0px 0.4em 0px 2em;
}

/* styles for text types */
..report .text {
	text-align: left;
	white-space: normal;
}

..report .text .big {
	margin-bottom: 1em;
	width: 17em;
}

..report .text .more {
	display: none;
}

..report .text .note {
	font-style: italic;
	font-weight: bold;
}

..report .text .small {
	width: 10em;
}

..report sup {
	font-style: italic;
}

..report .outerFootnotes {
	font-size: 1em;
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>11
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.21.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>1</ContextCount>
  <ElementCount>118</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>0</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>0</UnitCount>
  <MyReports>
    <Report instance="d222874d8k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="8-K" original="d222874d8k.htm">d222874d8k.htm</File>
    <File>adtn-20220106.xsd</File>
    <File>adtn-20220106_lab.xml</File>
    <File>adtn-20220106_pre.xml</File>
    <File>d222874dex991.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>14
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "instance": {
  "d222874d8k.htm": {
   "axisCustom": 0,
   "axisStandard": 0,
   "contextCount": 1,
   "dts": {
    "inline": {
     "local": [
      "d222874d8k.htm"
     ]
    },
    "labelLink": {
     "local": [
      "adtn-20220106_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "adtn-20220106_pre.xml"
     ]
    },
    "schema": {
     "local": [
      "adtn-20220106.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
     ]
    }
   },
   "elementCount": 23,
   "entityCount": 1,
   "hidden": {
    "http://xbrl.sec.gov/dei/2020-01-31": 3,
    "total": 3
   },
   "keyCustom": 0,
   "keyStandard": 118,
   "memberCustom": 0,
   "memberStandard": 0,
   "nsprefix": "adtn",
   "nsuri": "http://www.adtran.com/20220106",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d222874d8k.htm",
      "contextRef": "duration_2022-01-06_to_2022-01-06",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "100000 - Document - Document and Entity Information",
     "role": "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d222874d8k.htm",
      "contextRef": "duration_2022-01-06_to_2022-01-06",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 0,
   "tag": {
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code",
        "terseLabel": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cover page.",
        "label": "Cover [Abstract]",
        "terseLabel": "Cover [Abstract]"
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address, Address Line One",
        "terseLabel": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address, City or Town",
        "terseLabel": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address, Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address, State or Province",
        "terseLabel": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number",
        "terseLabel": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation State Country Code",
        "terseLabel": "Entity Incorporation State Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_PreCommencementIssuerTenderOffer": {
     "auth_ref": [
      "r2"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.",
        "label": "Pre Commencement Issuer Tender Offer",
        "terseLabel": "Pre Commencement Issuer Tender Offer"
       }
      }
     },
     "localname": "PreCommencementIssuerTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_PreCommencementTenderOffer": {
     "auth_ref": [
      "r3"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.",
        "label": "Pre Commencement Tender Offer",
        "terseLabel": "Pre Commencement Tender Offer"
       }
      }
     },
     "localname": "PreCommencementTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_Security12bTitle": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Title of a 12(b) registered security.",
        "label": "Security 12b Title",
        "terseLabel": "Security 12b Title"
       }
      }
     },
     "localname": "Security12bTitle",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "securityTitleItemType"
    },
    "dei_SecurityExchangeName": {
     "auth_ref": [
      "r1"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the Exchange on which a security is registered.",
        "label": "Security Exchange Name",
        "terseLabel": "Security Exchange Name"
       }
      }
     },
     "localname": "SecurityExchangeName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarExchangeCodeItemType"
    },
    "dei_SolicitingMaterial": {
     "auth_ref": [
      "r4"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.",
        "label": "Soliciting Material",
        "terseLabel": "Soliciting Material"
       }
      }
     },
     "localname": "SolicitingMaterial",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_TradingSymbol": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Trading symbol of an instrument as listed on an exchange.",
        "label": "Trading Symbol",
        "terseLabel": "Trading Symbol"
       }
      }
     },
     "localname": "TradingSymbol",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "tradingSymbolItemType"
    },
    "dei_WrittenCommunications": {
     "auth_ref": [
      "r6"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.",
        "label": "Written Communications",
        "terseLabel": "Written Communications"
       }
      }
     },
     "localname": "WrittenCommunications",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://www.adtran.com//20220106/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    }
   },
   "unitCount": 0
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b"
  },
  "r1": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r2": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13e",
   "Subsection": "4c"
  },
  "r3": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14d",
   "Subsection": "2b"
  },
  "r4": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14a",
   "Subsection": "12"
  },
  "r5": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r6": {
   "Name": "Securities Act",
   "Number": "230",
   "Publisher": "SEC",
   "Section": "425"
  }
 },
 "version": "2.1"
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>15
<FILENAME>0001193125-22-003467-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001193125-22-003467-xbrl.zip
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M!(MCFD!;K$?$;E( 'BN *=&8X/;ZSH-<MWD*G$^7>@77OZ*+T)M7Y?A)4D<
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M^\3UJ5+/E3UX+!)?.%5])RD*[XLGJ=NC 32]$6MU[#>IOV7)KO;B5!,! 1T
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M?!@-3PI3E^:^,_RV\U)'>".X WZ\?_%?4$L#!!0    ( (!X)E1),[8=X1,
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ME+PR+P^9:\C!^*(/T^_)G:BE#/VVCC)]2[&^'B/=$SJ1F.ONSM9VXE/Y:JL
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M#@  9#(R,C@W-&0X:RYH=&U02P$"% ,4    " " >"9423.V'>$3  !)/0
M$0              @ $R(@  9#(R,C@W-&1E>#DY,2YH=&U02P4&      4
,!0!  0  0C8

end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
