SAT Corporation Partners with ViaSat to Provide Signal Monitoring and Interference Detection

SAT Corporation Partners with ViaSat to Provide Signal Monitoring and
Interference Detection
Monics(R) System Will Support Eight Gateway Earth Stations Planned Throughout
Europe for Tooway(TM) Consumer Broadband

SUNNYVALE, Calif., Oct. 21 /PRNewswire-FirstCall/ -- Integral Systems, Inc.
(Nasdaq: ISYS) today announced that its wholly-owned subsidiary, SAT
Corporation, has been chosen to provide Satellite Monitoring and Interference
Detection capability to broadband gateway earth stations from ViaSat Inc.
(Nasdaq: VSAT) for the previously announced high-capacity KA-SAT Ka-band
satellite system.

The Tooway service operated by Eutelsat broadband subsidiary Skylogic, is
already using SAT Corporation's Monics System to monitor carrier activity and
is supplying consumer broadband service using the Eutelsat HOT BIRD(TM) 6 and
Eurobird(TM) 3 satellites and the ViaSat SurfBeam® networking system.

KA-SAT is a high capacity Ka-band spot beam satellite with planned coverage
over Europe, the Middle East, and Northern Africa. With a capacity estimated
at 70 Gbps, KA-SAT is expected to be (at launch) the highest capacity
satellite in the world. KA-SAT is a European counterpart to ViaSat-1, a
Ka-band satellite designed to deliver 100 Gbps of broadband capacity to the
North American market, with a planned launch in 2011.

Monics is a state of the art system that automatically monitors Skylogic's
carrier channels using SAT Corporation's Digital Signal Processing technology.
The system's unique technology provides carrier signal monitoring and
interference detection in a fraction of the time of a classic spectrum
analyzer. Monics' algorithms automatically detect, characterize, and display
interfering signals, and allow results to be viewed immediately, or any later
time. The Monics system will be devoted to Quality of Service monitoring of
Skylogic's carriers while detecting interference and/or unauthorized users of
the system payloads.

"We are pleased that Skylogic and ViaSat have selected SAT Corporation to
support Skylogic's carrier monitoring requirements," said Bob Potter,
president of SAT Corporation. "Our strong position in the industry allows us
to partner with companies like ViaSat to provide a system that achieves the
operational goals of ViaSat and their customer."

"ViaSat is very pleased to have partnered with SAT Corporation to provide
Carrier Monitoring and Interference Detection capability to our customer. SAT
Corporation's reputation as the premier Satellite Signal Monitoring company,
made it an easy selection," said Elizabeth Skipper, supply chain manager for
ViaSat.

ABOUT INTEGRAL SYSTEMS
Integral Systems, Inc., of Columbia, MD, applies more than 25 years experience
to provide integrated technology solutions for SATCOM-interfaced networks.
Customers have relied on the Integral Systems family of companies (Integral
Systems Inc., Integral Systems Europe, Lumistar, Inc., Newpoint Technologies,
Inc., RT Logic, and SAT Corporation) to deliver on time and on budget for more
than 250 satellite missions. Our dedication to customer service has solidified
long-term relationships with the U.S. Air Force, NASA, NOAA, and nearly every
satellite operator in the world. Integral Systems is listed in Forbes' Top 200
Small Companies in America for 2008. For more information, visit
http://www.integ.com/.

ABOUT VIASAT
ViaSat produces innovative satellite and other digital communication products
that enable fast, secure and efficient communications to any location. The
company provides networking products and managed network services for
enterprise IP applications; is a key supplier of network-centric military
communications and encryption technologies and products to the U.S.
government; and is the primary technology partner for gateway and
customer-premises equipment for consumer and mobile satellite broadband
services. ViaSat is based in Carlsbad, CA, has major locations in Duluth, GA,
and Germantown, MD, and additional field offices and service centers
worldwide. http://www.viasat.com

Company Contact:
Kathryn Herr
Vice President, Marketing and Communications
Integral Systems, Inc.
Phone: 443.539.5118
kherr@integ.com

Media Contact:
Andrew Miller
Zeno Group for Integral Systems
Phone: 707.386.1193
andrew.miller@zenogroup.com

SOURCE Integral Systems, Inc.

Company Contact: Kathryn Herr, Vice President, Marketing and Communications of
Integral Systems, Inc., +1-443-539-5118, kherr@integ.com; or Media Contact:
Andrew Miller of Zeno Group for Integral Systems, +1-707-386-1193,
andrew.miller@zenogroup.com