AT&T Introduces the AT&T USBConnect Mercury, Delivering 3G Mobile Broadband Speed with Style

AT&T USBConnect Mercury Offers Compact Design and New User-Friendly Features to Access Nation’s Fastest 3G Network

Dallas, Texas, Vancouver, B.C. — Speed through the air with style. AT&T Inc. (NYSE:T) and Sierra Wireless (Nasdaq:SWIR - TSX:SW) today announced the availability of the AT&T USBConnect Mercury, the newest and smallest addition to AT&T’s High Speed Packet Access (HSPA)-capable lineup of LaptopConnect devices on the nation’s fastest third-generation (3G) network.

Designed and manufactured by Sierra Wireless, the AT&T USBConnect Mercury is a convenient, easy-to-use USB device that provides a high speed connection to the AT&T wireless network whenever it’s needed. The device provides plug-and-play installation by including a preloaded version of AT&T Communication Manager software for Microsoft Windows Vista, XP and 2000 notebooks and Sierra’s Watcher™ software for Mac notebooks (versions 10.4.11 or later) so that new customers can get up and running quickly and easily.

AT&T has the nation’s fastest 3G network, delivering LaptopConnect customers typical downlink speeds between 700 kilobits per second (Kbps) and 1.7 megabits per second (Mbps) and typical uplink speeds between 500 Kbps and 1.2 Mbps. With faster download and upload speeds for sending and receiving large e-mails, Internet browsing and video streaming, customers will experience enhanced performance while staying connected to the information they need.

The AT&T USBConnect Mercury includes new user-friendly features, including an integrated microSD slot that provides customers with a portable storage solution, eliminating the need for additional storage hardware.

“With the nation’s fastest 3G network, our customers can take advantage of speed and the stylish USBConnect Mercury whether they are traveling across town, around the country or the globe,” said Michael Woodward, vice president, Business Mobility Products for AT&T’s wireless unit. “With AT&T’s 3G coverage reaching nearly 350 U.S. metropolitan areas by the end of the year, customers can easily and quickly stay connected when away from their home or desk.”

The AT&T USBConnect Mercury allows customers to stay connected while traveling to more than 150 countries and provides access to 3G networks in more than 60. It works seamlessly across HSPA and EDGE/GPRS networks and provides customers with the ultimate mix of coverage and performance.

“We are pleased to work with AT&T once again to offer a feature-rich mobile broadband solution to customers,” said Dan Schieler, senior vice president, Worldwide Sales for Sierra Wireless. “The USBConnect Mercury delivers a reliable, fast connection in a compact, durable design that fits the mobile lifestyle.”

Pricing and Availability
The AT&T USBConnect Mercury is available today at no cost¹ through AT&T business sales channels, online at wireless.att.com and in company-owned AT&T retail locations for customers who choose a two-year DataConnect plan of $60 or more. AT&T offers a variety of DataConnect rate plans, including a plan for up to 5 gigabytes (GB) of domestic use for $60 a month for customers.

Customers traveling outside the U.S. can choose one of AT&T’s DataConnect North America or DataConnect Global plans. The DataConnect North America plan includes 100 megabytes (MB) of monthly data use in Canada and Mexico plus 5 GB of monthly data use in the U.S. for $109.99 per month. DataConnect Global plans offer discounted data rates in 67 popular countries plus 5 GB of data use in the U.S. For $139.99 per month customers receive 100MB of monthly data in those 67 countries, or for $229.99 per month customers receive 200MB of monthly use in those same 67 countries. Visit www.att.com/wirelessinternational for more information.

For the complete array of AT&T offerings, visit www.att.com.

¹ Mail-in rebate includes $100 AT&T promotion card. A two-year service agreement is also required. AT&T promotion card valid wherever major credit cards are accepted and for 120 days after issue date. May be used to pay wireless bill. Not redeemable for cash and cannot be used for cash withdrawal at ATMs or at automated gas pumps.

About AT&T
AT&T Inc. (NYSE:T) is a premier communications holding company. Its subsidiaries and affiliates, AT&T operating companies, are the providers of AT&T services in the United States and around the world. Among their offerings are the world’s most advanced IP-based business communications services and the nation’s leading wireless, high speed Internet access and voice services. In domestic markets, AT&T is known for the directory publishing and advertising sales leadership of its Yellow Pages and YELLOWPAGES.COM organizations, and the AT&T brand is licensed to innovators in such fields as communications equipment. As part of its three-screen integration strategy, AT&T is expanding its TV entertainment offerings. In 2008, AT&T again ranked No. 1 on Fortune magazine’s World’s Most Admired Telecommunications Company list and No. 1 on America’s Most Admired Telecommunications Company list. Additional information about AT&T Inc. and the products and services provided by AT&T subsidiaries and affiliates is available at www.att.com.

About Sierra Wireless
Sierra Wireless (NASDAQ: SWIR - TSX: SW) modems and software connect people and systems to mobile broadband networks around the world. The Company offers a diverse product portfolio addressing enterprise, consumer, original equipment manufacturer, specialized vertical industry, and machine-to-machine markets, and provides professional services to customers requiring expertise in wireless design, integration, and carrier certification. For more information about Sierra Wireless, visit www.sierrawireless.com.

Sierra Wireless 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.

© 2008 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners.