Sierra Wireless, Inc.
TSX : SW
NASDAQ : SWIR

Sierra Wireless, Inc.
O2 plc

Manx Telecom

October 31, 2005 19:10 ET

O2, Sierra Wireless, and Manx Telecom Announce Availability of the AirCard 850 Wireless Network Card on Manx Telecom-Europe's First Super-Fast 3G Service

VANCOUVER, BRITISH COLUMBIA and DOUGLAS, THE ISLE OF MAN--(CCNMatthews - Oct. 31, 2005) - Sierra Wireless (TSX:SW)(NASDAQ:SWIR), O2, and Manx Telecom (an O2 plc subsidiary) today announced commercial availability of the AirCard® 850 3G wireless wide area network card on Manx Telecom's newly unveiled HSDPA network on the Isle of Man. This is Europe's first commercial deployment of fully functional HSDPA network cards and network-wide HSDPA technology. The AirCard 850 and commercial HSDPA network service is now available to Manx Telecom customers. When purchased with the Manx Telecom Pronto Connect Data tariff, these cards will cost Pounds Sterling 49+VAT.

Out of the box, the AirCard 850 is fully functional on HSDPA, UMTS, EDGE, and GPRS networks. The AirCard 850 utilizes the 2100 MHz UMTS frequency band and offers average data rates of 500 to 800 kbps, with bursts to 1.3 Mbps on Manx's HSDPA network(i). Ideal for frequent travelers, the AirCard 850 enables international roaming on HSDPA and UMTS networks across Europe, and on all four EDGE and GPRS frequency bands (850, 900, 1800, and 1900 MHz) used worldwide. The AirCard 850 wireless WAN card is a Type II PC Card with a slim, unextended design, allowing users to conveniently store the unit inside the laptop.

Manx Telecom customers will initially experience peak data speeds of up to 1.3 Mbps with theoretical speeds on the network of up to 14.4 Mbps available in the future. For end users, this translates to an experience similar to a fixed broadband connection while using email, connecting to server-based corporate applications through a VPN, or accessing the Internet, including streaming audio and video files with throughput three times faster than today's commercial 3G UMTS networks.

"We are committed to maintaining a leadership role in offering customers the best wireless data technology available, a commitment shared by Sierra Wireless," said Dave Williams, group chief technology officer of O2. "With the launch of the Manx Telecom HSDPA network and the Sierra Wireless AirCard 850 wireless network card, customers on the Isle of Man can be the first to use this technology and stay connected to their office or home with one of the fastest wireless solutions available."

"Our partnership with Sierra Wireless will enable us to meet customers' increasing demands for fast and reliable wireless data solutions," said Chris Hall, managing director of Manx Telecom. "Sierra Wireless has a reputation for quality and innovation and we want our customers to receive the best products the market has to offer."

"With the Sierra Wireless AirCard 850 and the new HSDPA network O2 and Manx Telecom have unveiled, mobile data subscribers can expect that wirelessly using applications like music downloads, high-quality video streaming, web browsing, and VPN access to corporate networks, will offer an end-user experience similar to that of a fixed broadband connection," said Jim Lahey, vice president, EMEA, for Sierra Wireless. "Sierra Wireless is pleased to work with O2 and Manx Telecom to launch service on one of the most advanced 3G wireless networks available today."

To purchase an AirCard 850 from Manx Telecom, please visit the Manx Telecom shop or contact Mobile Sales on 0808 1624 220.

For more information about the Sierra Wireless AirCard 850 wireless wide area network card, please visit www.sierrawireless.com/ProductsOrdering/ac8x0.asp, or contact the Sierra Wireless Sales Desk by calling 604-232-1488 or e-mailing sales@sierrawireless.com.

(i) Actual performance subject to network conditions.

Note to editors:

To view and download images of Sierra Wireless products, please visit www.sierrawireless.com/news/photos.asp.

O2 plc

O2 plc has 100% ownership of mobile network operators in three countries - the UK, Germany and Ireland - as well as a leading mobile Internet portal business. All of these businesses are branded as 'O2'.

The company is a founding member of Starmap Mobile Alliance, has operations on the Isle of Man (Manx Telecom) and owns Airwave O2 - an advanced, digital emergency communications service. In addition, O2 has established the Tesco Mobile and Tchibo Mobilfunk joint venture businesses in the UK and Germany respectively.

O2 has more than 25 million customers and some 15,000 employees. It reported revenues for the year ended 31 March 2005 of Pounds Sterling 6.683 billion.

About Sierra Wireless

Sierra Wireless is a leader in delivering highly differentiated wireless solutions that enable our customers to improve their productivity and lifestyle. Sierra Wireless develops and markets the AirCard, the industry-leading wireless PC card line for portable computers; embedded modules for OEM wireless applications; and the MP line of rugged vehicle-mounted connectivity solutions. For more information about Sierra Wireless please visit www.sierrawireless.com.

"AirCard" is a registered trademark of Sierra Wireless. Other product or service names mentioned herein may be the trademarks of their respective owners.

Forward Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements relate to, among other things, plans and timing for the introduction or enhancement of our services and products, statements about future market conditions, supply conditions, channel and end customer demand conditions, revenues, gross margins, operating expenses, profits, and other expectations, intentions, and plans contained in this press release that are not historical fact. Our expectations regarding future revenues and earnings depend in part upon our ability to successfully develop, manufacture, and supply products that we do not produce today and that meet defined specifications. When used in this press release, the words "plan", "expect", "believe", and similar expressions generally identify forward-looking statements. These statements reflect our current expectations. They are subject to a number of risks and uncertainties, including, but not limited to, changes in technology and changes in the wireless data communications market. In light of the many risks and uncertainties surrounding the wireless data communications market, you should understand that we cannot assure you that the forward-looking statements contained in this press release will be realized.

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