<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2011-07-27</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000803014</issuerCik>
        <issuerName>COMVERSE TECHNOLOGY INC/NY/</issuerName>
        <issuerTradingSymbol>CMVT.PK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001428813</rptOwnerCik>
            <rptOwnerName>Bunyan John</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COMVERSE TECHNOLOGY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>810 SEVENTH AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Strategy &amp; Innovation</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>178006</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Includes 58,000 shares of Comverse Common Stock deliverable in settlement of vested awards of deferred stock units that are subject to deferred delivery and 75,000 shares of Comverse Common Stock deliverable in settlement of unvested awards of deferred stock units.  Shares of Comverse Common Stock deliverable in settlement of unvested awards of deferred stock units consist of 12,000, 33,000 and 30,000 shares granted on April 6, 2009 (the &quot;2009 Award&quot;), March 11, 2010 (the &quot;2010 Award&quot;) and March 3, 2011 (the &quot;2011 Award&quot;), respectively.  The 2009 Award is scheduled to vest on April 6, 2012, subject to accelerated vesting under certain circumstances.  The 2010 Award is scheduled to vest as to fifty percent (50%) of the shares underlying the award on each of March 11, 2012 and March 11, 2013, subject to accelerated vesting under certain circumstances.</footnote>
        <footnote id="F2">(Continuation of Footnote 1) - The 2011 Award is scheduled to vest as to forty percent (40%) of the shares underlying such award on March 3, 2012 and as to thirty percent (30%) on each of March 3, 2013 and March 3, 2014, subject to accelerated vesting under certain circumstances.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John Bunyan</signatureName>
        <signatureDate>2011-07-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
