Zarlink to Discuss Voice-over-IP (VoIP) Quality at INTERNET TELEPHONY® Conference & EXPO West 2007

OTTAWA, CANADA, September 6, 2007 – Zarlink Semiconductor Inc. (NYSE/TSX:ZL) today announced that Rick Bye, segment marketing manager with Zarlink’s Wired Communications product group, will be discussing methods for ensuring quality in VoIP deployments at TMC’s INTERNET TELEPHONY® Conference & EXPO West 2007 (Sept. 10-12, Los Angeles Convention Center, Los Angeles, California).

“Reducing operating costs and improving customer satisfaction are two main goals associated with improving the quality of experience,” said Mr. Bye. “With the proper diagnostic tools, telecom service providers can implement line testing throughout the network and address both of these issues.”

Consumers are placing a higher priority on quality of the experience (QoE) for VoIP services. Mr. Bye’s session, “Understanding Quality of Experience”, will discuss causes for QoE failures, and software and hardware solutions that can more easily diagnose and resolve these problems. The session is scheduled for September 11th from 4:30-5:15 p.m.

Mr. Bye joined Zarlink as part of its recent acquisition of Legerity. Zarlink’s Wired Communications product group has been formed through the merger of the products and expertise of Zarlink’s Network Communications group and Legerity. The new product group delivers a range of voice enhancement and timing and synchronization products for the access, residential and enterprise markets.

“We are very pleased that Rick will be participating in this year’s show,” said Rich Tehrani, TMC president and conference chairman. “Legerity products and solutions continue to be widely recognized and respected within the industry, and I am confident that our attendees will appreciate hearing Mr. Bye’s perspective on VoIP quality of experience.”

INTERNET TELEPHONY® Conference & EXPO, held September 10-12, 2007, is the world’s largest and best-attended IP Communications trade show. At the last ITEXPO, held January 2007 in Ft. Lauderdale, FL, the show drew over 7,100 buyers and sellers of IP Communications products and services. For the upcoming show in September, TMC projects an attendance of 7,500. More information on the event, including registration and exhibition details, can be found at www.itexpo.com.

About Zarlink Semiconductor

For over 30 years, Zarlink Semiconductor has delivered semiconductor solutions that drive the capabilities of voice, enterprise, broadband and wireless communications. The Company’s success is built on its technology strengths including voice and data networks, optoelectronics and ultra low-power communications. For more information, visit www.zarlink.com.

Shareholders and other individuals wishing to receive, free of charge, copies of the reports filed with the U.S. Securities and Exchange Commission and Regulatory Authorities, should visit the Company’s web site at www.zarlink.com or contact Investor Relations.

Certain statements in this press release constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance, or achievements expressed or implied by such forward-looking statements. Such risks, uncertainties and assumptions include, among others, the following: rapid technological developments and changes; our ability to continue to operate profitably and generate positive cash flows in the future; our dependence on our foundry suppliers and third-party subcontractors; increasing price and product competition; our exposure to product warranty claims resulting from product defects or failures; and other factors referenced in our Annual Report on Form 20-F. Investors are encouraged to consider the risks detailed in this filing.

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Zarlink and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

For further information:

Edward Goffin
Media Relations
613 270-7112
edward.goffin@zarlink.com

Mike McGinn
Investor Relations
613 270-7210
mike.mcginn@zarlink.com

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