<SUBMISSION>
<ACCESSION-NUMBER>0001209191-07-001644
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20070103
<FILING-DATE>20070104
<DATE-OF-FILING-DATE-CHANGE>20070104
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>BELDEN CDT INC.
<CIK>0000913142
<ASSIGNED-SIC>3357
<IRS-NUMBER>363601505
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>BELDEN CDT INC.
<STREET2>7701 FORSYTH BOULEVARD, SUITE 800
<CITY>ST. LOUIS
<STATE>MO
<ZIP>63105
<PHONE>314-854-8000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>BELDEN CDT INC.
<STREET2>7701 FORSYTH BOULEVARD, SUITE 800
<CITY>ST. LOUIS
<STATE>MO
<ZIP>63105
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CABLE DESIGN TECHNOLOGIES CORP
<DATE-CHANGED>19931006
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Stroup John S
<CIK>0001340794
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-12561
<FILM-NUMBER>07510648
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>314-854-8000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7701 FORSYTH BOULEVARD
<STREET2>SUITE 800
<CITY>ST. LOUIS
<STATE>MO
<ZIP>63105
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-01-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000913142</issuerCik>
        <issuerName>BELDEN CDT INC.</issuerName>
        <issuerTradingSymbol>BDC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001340794</rptOwnerCik>
            <rptOwnerName>Stroup John S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7701 FORSYTH BOULEVARD, SUITE 800</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2007-01-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200.3</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>37.83</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>151745.45</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>194</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401(k) as of 1/18/2006</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares represent the dividend equivalent that would have been paid on the number of shares of common stock equal to the number of restricted stock units (RSUs) Mr. Stroup received at the time of his employment with the Company, plus prior dividend equivalents accruing on such RSUs.  All such dividend equivalents credited to Mr. Stroup shall be added to and thereafter be treated as RSUs under his employment agreement.  As RSUs, these dividend equivalents are subject to vesting, forfeiture and termination in accordance with the terms of his employment agreement.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/John S. Stroup</signatureName>
        <signatureDate>2007-01-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
