-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000873044-08-000038.txt : 20080814
<SEC-HEADER>0000873044-08-000038.hdr.sgml : 20080814
<ACCEPTANCE-DATETIME>20080814184158
ACCESSION NUMBER:		0000873044-08-000038
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080812
FILED AS OF DATE:		20080814
DATE AS OF CHANGE:		20080814

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RADISYS CORP
		CENTRAL INDEX KEY:			0000873044
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER PERIPHERAL EQUIPMENT, NEC [3577]
		IRS NUMBER:				930945232
		STATE OF INCORPORATION:			OR
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5445 NE DAWSON CREEK DR
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124
		BUSINESS PHONE:		5036461800

	MAIL ADDRESS:	
		STREET 1:		5445 NE DAWSON CREEK DRIVE
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GROUT SCOTT CHRISTOPHER
		CENTRAL INDEX KEY:			0001230502

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26844
		FILM NUMBER:		081020920

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		5036151200

	MAIL ADDRESS:	
		STREET 1:		5445 NE DAWSON CREEK DRIVE
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
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    <schemaVersion>X0303</schemaVersion>

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    <periodOfReport>2008-08-12</periodOfReport>

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        <issuerName>RADISYS CORP</issuerName>
        <issuerTradingSymbol>RSYS</issuerTradingSymbol>
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            <rptOwnerName>GROUT SCOTT CHRISTOPHER</rptOwnerName>
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            <rptOwnerStreet1>5445 NE DAWSON CREEK DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HILLSBORO</rptOwnerCity>
            <rptOwnerState>OR</rptOwnerState>
            <rptOwnerZipCode>97124</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>PRESIDENT AND CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                <transactionPricePerShare>
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            <transactionDate>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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            <transactionAmounts>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
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                <transactionPricePerShare>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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            <securityTitle>
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            <transactionDate>
                <value>2008-08-14</value>
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                <transactionAcquiredDisposedCode>
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            </expirationDate>
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                <transactionCode>M</transactionCode>
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                <transactionShares>
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                    <value>0</value>
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                    <value>D</value>
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                <value>2003-10-07</value>
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                <underlyingSecurityShares>
                    <value>31400</value>
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            <securityTitle>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionShares>
                    <value>9345</value>
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                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <value>2003-10-07</value>
                <footnoteId id="F5"/>
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                <value>2009-10-07</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                    <value>9345</value>
                </underlyingSecurityShares>
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    <footnotes>
        <footnote id="F1">The sales price reported is the weighted average sales price for the total shares sold.  The range of actual sales prices includes 2,141 shares sold at $12.00, 260 shares sold at $12.01, 100 shares sold at $12.02, 2,499 shares sold at $12.05 and 100 shares sold at $12.06.</footnote>
        <footnote id="F2">The sales price reported is the weighted average sales price for the total shares sold.  The range of actual sales prices includes 23,075 shares sold at $11.95, 200 shares sold at $11.955, 1,684 shares sold at $11.96, 2,242 shares sold at $11.97, 926 shares sold at $11.98, 169 shares sold at $11.99, 2,404 shares sold at $12.00, 400 shares sold at $12.01, 200 shares sold at $12.02 and 100 shares sold at $12.03.</footnote>
        <footnote id="F3">The sales price reported is the weighted average sales price for the total shares sold on August 14, 2008 which was 37,600 shares.  The range of actual sales prices includes 12,705 shares sold at $11.90, 2,395 shares sold at $11.91, 5,791 shares sold at $11.92, 1,244 shares sold at $11.93, 9 shares sold at $11.94, 10,676 shares sold at $11.95, 100 shares sold at $11.955, 2,945 shares sold at $11.96, 1,130 shares sold at $11.97, 200 shares sold at $11.977, 200 shares sold at $11.99, 100 shares sold at $12.0075, 100 shares sold at $12.014 and 5 shares sold at $12.03.</footnote>
        <footnote id="F4">Represents acquisition of stock under the RadiSys Corporation Employee Stock Purchase Plan.</footnote>
        <footnote id="F5">ISO AND NQ grant on this date vest in conjunction with each other under the ISO 100,000 limit rule.  Vesting schedule is one year from date of grant, option shall be exercisable for one-third of the total option shares and shall be exercisable in monthly increments equal to 1/36th of the total option shares, cumulatively, each month thereafter.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Brian Bronson, Attorney-In-Fact  For: Scott C. Grout</signatureName>
        <signatureDate>2008-08-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----