-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 7zwfXgqbWMCdpJLk2CGKzA==

<SEC-DOCUMENT>0001181431-08-034640.txt : 20080527
<SEC-HEADER>0001181431-08-034640.hdr.sgml : 20080526
<ACCEPTANCE-DATETIME>20080527161808
ACCESSION NUMBER:		0001181431-08-034640
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080522
FILED AS OF DATE:		20080527
DATE AS OF CHANGE:		20080527

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSWITCH CORP /DE
		CENTRAL INDEX KEY:			0000944739
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				061236189
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		THREE ENTERPRISE DRIVE
		CITY:			SHELTON
		STATE:			CT
		ZIP:			06484
		BUSINESS PHONE:		2039298810

	MAIL ADDRESS:	
		STREET 1:		THREE ENTERPRISE DRIVE
		CITY:			SHELTON
		STATE:			CT
		ZIP:			06484

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DAS SANTANU DR
		CENTRAL INDEX KEY:			0001224147

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25996
		FILM NUMBER:		08860978

	BUSINESS ADDRESS:	
		STREET 1:		14 HUNTER REDGE ROAD
		CITY:			MONROE
		STATE:			CT
		ZIP:			06468
		BUSINESS PHONE:		2039298810X2224
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd207401.xml
<DESCRIPTION>SEC FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000944739</issuerCik>
        <issuerName>TRANSWITCH CORP /DE</issuerName>
        <issuerTradingSymbol>TXCC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001224147</rptOwnerCik>
            <rptOwnerName>DAS SANTANU DR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TRANSWITCH CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>3 ENTERPRISE DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SHELTON</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06484</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO and President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Incentive Stock Options (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>.75</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-05-22</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2008-05-22</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>87650</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-05-22</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-05-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock $0.001 par value</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>87650</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2962925</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">7,650 options vest - 50% at 5/22/2008, 12.5% at 15 months, 12.5% at 18 months, 12.5% at 21 months, and 12.5% at 24 months.

80,000 options vest - 12.5% every 3 months over two years.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Santanu Das</signatureName>
        <signatureDate>2008-05-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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