<SUBMISSION>
<ACCESSION-NUMBER>0001209191-07-012853
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20070221
<FILING-DATE>20070223
<DATE-OF-FILING-DATE-CHANGE>20070223
<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>SHEEHAN PETER
<CIK>0001254891
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-12561
<FILM-NUMBER>07644791
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>C/O MONTROSE CDT
<STREET2>28 SWORD ST
<CITY>AUBURN
<STATE>MA
<ZIP>01501
</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>2007-02-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001254891</rptOwnerCik>
            <rptOwnerName>SHEEHAN PETER</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BELDEN CDT INC.</rptOwnerStreet1>
            <rptOwnerStreet2>7701 FORSYTH BLVD., SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Op., Pres. Belden Americas</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <transactionDate>
                <value>2007-02-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13006</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Rights</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>47.705</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-02-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>47.705</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-02-21</value>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2017-02-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>8100</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>45350</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">RSUs awarded pursuant to the fulfillment of Performance share units awarded last year.  RSUs will vest in equal amounts over a two-year period beginning in 2008, and upon vesting, will be payable in Company stock (each RSU representing one share of Company stock).  Additional terms apply in the event of the holder's termination, death or retirement.</footnote>
        <footnote id="F2">The SAR's were issued at the average of the high and low price of the Company's stock on February 21, 2007 ($47.705).  They will vest in equal amounts over three years commencing on the first anniversary of the grant and will expire ten years after the grant date.  Upon exercise, the holder will receive in Belden stock the excess of fair market value per share at the time of exercise over the exercise price, times the number of shares subject to the SAR.  Additional terms apply in the event of the holder's termination, death or retirement.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Peter Sheehan</signatureName>
        <signatureDate>2007-02-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
