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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,
 GmTrQkYJpGGiGPNN5bWdKO6UBNnTvfAiNlBSpUoKhYEpYwZ1DdmwJjywxMBpLpwD
 XBnzGkQ43WfCtUFAYmFmJw==

<SEC-DOCUMENT>0001179110-06-009641.txt : 20060502
<SEC-HEADER>0001179110-06-009641.hdr.sgml : 20060502
<ACCEPTANCE-DATETIME>20060502103449
ACCESSION NUMBER:		0001179110-06-009641
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060501
FILED AS OF DATE:		20060502
DATE AS OF CHANGE:		20060502

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Grindeland Mark A
		CENTRAL INDEX KEY:			0001354616

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23282
		FILM NUMBER:		06797665

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		508-271-1000

	MAIL ADDRESS:	
		STREET 1:		NMS COMMUNICATIONS
		STREET 2:		100 CROSSING BLVD.
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01702

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NMS COMMUNICATIONS CORP
		CENTRAL INDEX KEY:			0000915866
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				042814586
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 CROSSING BLVD
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01702
		BUSINESS PHONE:		5086501300

	MAIL ADDRESS:	
		STREET 1:		100 CROSSING BLVD.
		CITY:			FRAMINGHAM
		STATE:			MA
		ZIP:			01702

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATURAL MICROSYSTEMS CORP
		DATE OF NAME CHANGE:	19931207
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-05-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000915866</issuerCik>
        <issuerName>NMS COMMUNICATIONS CORP</issuerName>
        <issuerTradingSymbol>NMSS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001354616</rptOwnerCik>
            <rptOwnerName>Grindeland Mark A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>NMS COMMUNICATIONS</rptOwnerStreet1>
            <rptOwnerStreet2>100 CROSSING BLVD.</rptOwnerStreet2>
            <rptOwnerCity>FRAMINGHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01702</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP and GM, Mobile Applications</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.71</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2007-02-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>250000</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.66</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2007-03-28</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-03-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20000</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">85,000 shares are exercisable on 2/1/2007; 20,625 shares are exercisable on 5/1/2007; 20,625 shares are exercisable on 8/1/2007; 20,625 shares are exercisable on 11/1/2007; 20,625 shares are exercisable on 2/1/2008; 20,625 shares are exercisable on 5/1/2008; 20,625 shares are exercisable on 8/1/2008; 20,625 shares are exercisable on 11/1/2008; and 20,625 shares are exercisable on 2/1/2009.</footnote>
        <footnote id="F2">10,000 shares are exercisable on 3/28/2007; 2,500 shares are exercisable on 6/28/2007; 2,500 shares are exercisable on 9/28/2007; 2,500 shares are exercisable on 12/28/2007; and 2,500 shares are exercisable on 3/28/2008.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Dianne Callan, Attorney-in-fact for Mark Grindeland</signatureName>
        <signatureDate>2006-05-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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