OTTAWA,May 11 2005 --Telesat, one of the world's leading satellite
operators, has signed a multi-year agreement to purchase
DOCSIS(R)-for-satellite Ka-band consumer terminals (CTs) from ViaSat Inc.
(NASDAQ: VSAT). Telesat chose ViaSat in March 2004 as the supplier of gateways
and terminals for Telesat broadband consumer Ka-band services in Canada on the
Anik F2 satellite.
    ViaSat DOCSIS(R)-for-satellite Ka-band consumer terminals use a
networking technology that uses satellite bandwidth more efficiently, lowering
the cost of broadband service to consumers. The terminals include satellite
modems and Ka-band transceivers from US Monolithics, ViaSat's wholly owned
subsidiary.
    "Telesat is committed to using the best technologies available to bring
affordable broadband services to consumers -- no matter where they live," said
Dave Lahey, Telesat's vice president of business development. "ViaSat's
terminals will help Telesat deliver a superior satellite broadband service
that can help make the 'digital divide' a thing of the past."
    The two companies have developed a strong relationship as Telesat has
implemented its plans for new broadband services. In March 2004, ViaSat
supplied gateways and terminals for Telesat's Anik F2, the world's largest
commercial communications satellite. Anik F2 is one of the first satellites to
provide North American consumers with ubiquitous service in the Ka-band -- a
breakthrough satellite communications technology for delivering cost-
effective, two-way broadband services.
    "We have tremendous respect for Telesat's innovation and technical
leadership in broadband and Ka band satellite systems," said Mark Dankberg,
chairman and CEO of ViaSat. "So we are especially proud of this major
expansion in their DOCSIS-based consumer broadband service. This increases the
number of DOCSIS consumer terminals on order worldwide to almost 200,000 units
and will significantly support our efforts to establish satellite as an
economical alternative for broadband access services."

    About Telesat (www.telesat.com)
    Telesat is a pioneer in satellite operations and systems management. The
company made history in 1972 with the launch of the first domestic commercial
communications satellite in geostationary orbit. Today, Telesat competes with
other top international satellite fleets in providing telecommunications and
broadcasting services throughout the Americas. Telesat is a wholly owned
subsidiary of BCE Inc., a leading communications company with shares listed in
the United States, Canada and Europe.

    About ViaSat (www.viasat.com)
    ViaSat produces innovative satellite and other communication products
that enable fast, secure, and efficient communications to any location.
Products include satellite ground equipment, information security devices,
tactical data radios and communication simulators. ViaSat has a full line of
VSAT products for data and voice applications, and is a market leader in
Ka-band satellite systems, from user terminals to gateways. ViaSat has
locations in Carlsbad, CA, and Norcross, GA, along with its Comsat
Laboratories division based in Clarksburg, MD. Additional field offices are
located in Boston, MA, the Washington DC/Baltimore area, China, India, Italy
and Australia.

    About US Monolithics (www.usmonolithics.com)
    U.S. Monolithics focuses on providing superior, low-cost, MMIC-based
products to the growing wireless telecommunications markets including
satellite communications, point-to-point, and point-to-multipoint systems.
U.S. Monolithics' products include high-power Gallium Arsenide (GaAs)
Monolithic Microwave Integrated Circuit (MMIC) components and multi-chip
modules, including power amplifiers, transceivers, and integrated block
converters. U.S. Monolithics is a wholly owned subsidiary of ViaSat.

    DOCSIS is a registered trademark of Cable Television Laboratories Inc.



For further information: please contact: Marilynn Wright, Telesat,
Tel: (613) 748-8855, m.wright@telesat.ca; Bruce Rowe, ViaSat,
Tel: (760) 476-2505, bruce.rowe@viasat.com; Daniel Tisch or Karen Passmore
(media only), Argyle Rowland Communications, Tel: (416) 968-7311 ext. 223,
228, dtisch@argylerowland.com, kpassmore@argylerowland.com