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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 IiQIyCbNEw00/AwvLNwkZMXr5pOEYdBy8yCS601LSHS7bl9TBF3Ye+5wldN8Lev3
 emg7E0xxFbrfLQ/QssGGRw==

<SEC-DOCUMENT>0001144204-06-016692.txt : 20060425
<SEC-HEADER>0001144204-06-016692.hdr.sgml : 20060425
<ACCEPTANCE-DATETIME>20060425133849
ACCESSION NUMBER:		0001144204-06-016692
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060420
FILED AS OF DATE:		20060425
DATE AS OF CHANGE:		20060425

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GENERAL DATACOMM INDUSTRIES INC
		CENTRAL INDEX KEY:			0000040518
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				060853856
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		6 RUBBER AVENUE
		CITY:			NAUGATUCK
		STATE:			CT
		ZIP:			06770
		BUSINESS PHONE:		2037290271

	MAIL ADDRESS:	
		STREET 1:		6 RUBBER AVENUE
		CITY:			NAUGATUCK
		STATE:			CT
		ZIP:			06770

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MODLIN HOWARD S
		CENTRAL INDEX KEY:			0001188182

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08086
		FILM NUMBER:		06777454

	MAIL ADDRESS:	
		STREET 1:		P O BOX 813
		CITY:			LIBERTY CORNER
		STATE:			NJ
		ZIP:			07938
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v041215_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-04-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000040518</issuerCik>
        <issuerName>GENERAL DATACOMM INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>GNRD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188182</rptOwnerCik>
            <rptOwnerName>MODLIN HOWARD S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P O BOX 813</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LIBERTY CORNER</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07938</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Warrant (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>.275</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-04-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>909090</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-04-20</value>
            </exerciseDate>
            <expirationDate>
                <value>2013-04-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>909090</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>909090</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>/s/ Gerald Gordon, Attorney-in-fact for Howard S. Modlin</signatureName>
        <signatureDate>2006-04-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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