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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 NRnr9sxKTktOnCxGlKIJ5Q2GIYTyBrUvb8qf6P8O2KWwp0PkzpeJE/Map/Imlwlj
 RZyLj650Lji0EnHU6qpzuA==

<SEC-DOCUMENT>0001019056-03-001027.txt : 20031002
<SEC-HEADER>0001019056-03-001027.hdr.sgml : 20031002
<ACCEPTANCE-DATETIME>20031002175753
ACCESSION NUMBER:		0001019056-03-001027
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030930
FILED AS OF DATE:		20031002

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:		ROUTE 63
		CITY:			MIDDLEBURY
		STATE:			CT
		ZIP:			06762
		BUSINESS PHONE:		2035741118

	MAIL ADDRESS:	
		STREET 1:		P O BOX 1299
		CITY:			MIDDLEBURY
		STATE:			CT
		ZIP:			06762-1299

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GRAY GEORGE
		CENTRAL INDEX KEY:			0001242286

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08086
		FILM NUMBER:		03925354

	BUSINESS ADDRESS:	
		STREET 1:		301 N GREELEY AVENUE
		CITY:			CHAPPAQUA
		STATE:			NY
		ZIP:			10514
		BUSINESS PHONE:		2037290271

	MAIL ADDRESS:	
		STREET 1:		301 N GREELEY AVENUE
		CITY:			CHAPPAQUA
		STATE:			NY
		ZIP:			10514
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-09-30</periodOfReport>
    <issuer>
        <issuerCik>0000040518</issuerCik>
        <issuerName>GENERAL DATACOMM INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>GNRDV</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001242286</rptOwnerCik>
            <rptOwnerName>GRAY GEORGE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>301 NORTH GREELEY AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHAPPAQUA</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10514</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>VP Engineering &amp; Manufacturing</officerTitle></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Employee stock options (right to buy)</value></securityTitle><conversionOrExercisePrice><value>4.00</value></conversionOrExercisePrice><transactionDate><value>2003-09-30</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>10000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-09-30</value><footnoteId id="F1"/></exerciseDate><expirationDate><value>2008-09-29</value></expirationDate><
underlyingSecurity><underlyingSecurityTitle><value>common stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>10000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Conditional Stock award</value></securityTitle><conversionOrExercisePrice><value>.01</value></conversionOrExercisePrice><transactionDate><value>2003-09-30</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>25000</value></transactionShares><transactionPricePerShare><value>0</value></transactio
nPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-09-30</value><footnoteId id="F2"/></exerciseDate><expirationDate><value>2006-03-31</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>common stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>25000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>25000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">This option vests in four equal annual installments beginning on September 30, 2004, and expires five years from date of grant.</footnote><footnote id="F2">This is a conditional Stock award which is exercisable at $.01 
a share at any time on or prior to 3-31-06.</footnote></footnotes><remarks/><ownerSignature><signatureName>GEORGE M. GRAY</signatureName><signatureDate>2003-09-30</signatureDate></ownerSignature></ownershipDocument>

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