POWER OF ATTORNEY

Know all by these presents, that the undersigned, an officer,
director and/or shareholder of RadiSys Corporation
the "Company"), hereby constitutes and appoints each of the
ChiefExecutive Officer and the Chief Financial Officer,
signing singly, the undersigned's true and lawful
attorney-in-fact to:
(1) prepare, execute in the undersigned's name and on the
undersigned's behalf, and submit to the U.S. Securities
and Exchange Commission (the "SEC") a Form ID, including
amendments thereto, and any other documents necessary or
appropriate to obtain codes and passwords enabling the
undersigned to make electronic filings with the SEC of
reports required by Section 16(a) of the Securities
Exchange Act of 1934 or any rule or regulation of the SEC;
(2) execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of the
Company, Forms 3, 4, and 5 in accordance with Section 16(a)
of the Securities Exchange Act of 1934 and the rules
thereunder, and any other forms or reports the undersigned
may be required to file in connection with the undersigned's
ownership, acquisition, or disposition of securities of
the Company; (3) do and perform any and all acts for
and on behalf of the undersigned which may be necessary
or desirable to complete and execute any such Form 3, 4,
or 5, or other form or report, and timely file such form
or report with the United States Securities and Exchange
Commission and any stock exchange or similar authority; and
(4) take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of
such attorney in fact, may be of benefit to, in the best
interest of, or legally required by, the undersigned,
it being understood that the documents executed by such
attorney in fact on behalf of the undersigned pursuant
to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney
in fact may approve in such attorney in fact's discretion.

The undersigned hereby grants to each such attorney in
fact full power and authority to do and perform any
and every act and thing whatsoever requisite, necessary,
or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney
in fact, or such attorney in fact's substitute or
substitutes, shall lawfully do or cause to be done by
virtue of this power of attorney and the rights and powers
herein granted.  The undersigned acknowledges that the
foregoing attorneys in fact, in serving in such capacity
at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's
responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to
file Forms 3, 4, and 5 with respect to the undersigned's
holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a
signed writing delivered to the foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 10th day of July, 2008.

Signature: /s/ Anthony Ambrose