RT Logic Delivers on South Pole TDRSS Relay II Project

RT Logic's Telemetrix Products Operational, Primary Communications Link to
White Sands

COLUMBIA, Md., July 7 /PRNewswire-FirstCall/ -- Integral Systems, Inc.
(Nasdaq: ISYS), today announced that RT Logic, a wholly-owned subsidiary, has
delivered and made operational its products supporting the South Pole Tracking
and Data Relay Satellite System (TDRSS) Relay II Project (SPTR II). Under a
contract awarded by LJT & Associates, Inc. (LJT, Inc.), for SPTR II, RT Logic
supplied several products including its Telemetrix 1200HDR (T1200HDR) high
data rate modem, the Telemetrix 400XR (T400XR) modem, and the Telemetrix 500SB
(T500SB) Space Bridge.

High-rate file transfers are enabled by RT Logic's T1200HDR modem and T500SB
communicating through NASA's TDRSS Ku-band Single Access Return (KuSAR)
high-rate link. These RT Logic products will combine to enable science data
relays through file transfers. Low-rate data transfers between the South Pole
and White Sands are supported by RT Logic's T400XR and the T500SB through the
TDRSS' S-band RF link.

"It was a pleasure to work with the talented team at RT Logic," said Julio
Varela, SPTR II Program Manager for LJT & Associates. "RT Logic delivered
quality engineered products for a program that utilizes a unique set of custom
interfaces and requirements. RT Logic's flexible and reconfigurable
architectures proved to be a valuable asset in meeting the unique requirements
of the program. RT Logic's timely delivery and quick response engineering
support contributed to the success of the SPTR II Project."

"We are very pleased to be working with LJT & Associates on the communications
link with the Amundsen Scott South Pole Station," said Matt Langenbahn, RT
Logic's SPTR II Program Manager. "RT Logic's extensive experience with TDRSS
ground instrumentation solutions allowed us to meet a tight schedule without
sacrificing product performance or quality."

About RT Logic
RT Logic is a leading provider of products for ground-based applications,
primarily for satellite and launch range operations. Known for exceptional
innovation, performance, and support, RT Logic has delivered over 3000 systems
since its inception in 1997. RT Logic offers a complete line of Telemetrix(R)
products used in systems for widely varied control center, ground antenna, and
range applications. Since October 2002, RT Logic has operated as a
wholly-owned subsidiary of Integral Systems, Inc. For more information visit
www.rtlogic.com.

About Integral Systems
Integral Systems, Inc., 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 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 www.integ.com.

SOURCE Integral Systems, Inc.

Company Contact: Kathryn Herr, Vice President, Marketing and Communications of
Integral Systems, Inc., +1-301-731-4233, Ext. 1104, kherr@integ.com; or Media
Contact: Andrew Miller of The Zeno Group, +1-707-386-1193,
andrew.miller@zeno.com