September 23, 2004

marketStream™ Now Available on BlackBerry® Handheld Devices

Leading Provider of Mobile Market Data Teams With Research in Motion to Deliver Real-Time Wireless Data to Trading Floors and Private Investors

ANNAPOLIS, MD - TeleCommunication Systems, (TCS) (NasdaqNM:TSYS - News), a global leader in wireless data technology, announced today that its real-time streaming market data solution, marketStream™, is now available for BlackBerry® handheld devices.

Alexis Davis, Vice President Mobile Finance for TCS said, "The launch of marketStream on the BlackBerry platform has been timed to enable users of O2's pager network to make a smooth transition to next generation market data service, prior to the O2 pager network shutdown in Europe scheduled for December 2004. For those that need reliable mobile financial market data, there is no better time than now to upgrade to marketStream, the next generation financial data delivery system."

All BlackBerry users, both individual and corporate, can now install the marketStream application on their wireless handheld devices to give them global access to streaming equity security prices and volume, foreign exchange rates, futures, commodities and fixed income prices as well as news and charts. marketStream is an easy-to-install, Java™-based application that provides access to over 30 financial markets around the world.

"The BlackBerry platform is already widely deployed within financial industries and the marketStream application provides a complementary suite of advanced features for mobile professionals who wish to track global financial instruments on the go," said Mark Guibert, Vice President, Corporate Marketing at Research In Motion.

"I have been using marketStream for about a month now, and it has become invaluable in the running of my business. I had been using a satellite system that was 5 times the cost of the marketStream system. Not only does marketStream give me all of the data my satellite system gave me, but it is also extremely portable. This connectivity allows me to be on top of my markets, no matter where I am whether in the US or Europe. The marketStream application on the BlackBerry platform will become very popular in the trading community, and I commend you on the package you have put together," stated Joe Eppstein of EPP-MAR Metal Company.

As General Packet Radio Service (GPRS) makes real-time streaming possible, the users of marketStream receive essential market information significantly sooner than with paging, snapshot products, or through store- and-forward network channels. Furthermore, as a Java client designed specifically for wireless market data streaming, marketStream uses available bandwidth more efficiently than most wireless browser-based solutions. This results in a quicker and higher return on the user's investment in a wireless solution, since the user can react more rapidly to market fluctuations and make more informed trading decisions. Utilizing packet-based networks ensures that a marketStream user is always connected, but the user only pays for the volume of data sent.

To learn more about marketStream visit: www.marketStreamlive.com

About TeleCommunication Systems

TeleCommunication Systems, Inc. is a leading provider of mission critical wireless data solutions to carriers, enterprise and government customers. TCS' wireless data offerings range from providing location-based Enhanced 9-1-1 services in the U.S. and messaging infrastructure to wireless operators, real-time market data and alerts to financial institutions, mobile asset management and mobile office solutions for enterprises, and encrypted satellite communications to government customers.

This announcement contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. These statements are based upon TCS' current expectations and assumptions that are subject to a number of risks and uncertainties that would cause actual results to differ materially from those anticipated.

The actual results realized by the Company could differ materially from the statements made herein, depending in particular upon the risks and uncertainties described in the Company's filings with the Securities and Exchange Commission (SEC). These include without limitation risks and uncertainties relating to the Company's financial results and the ability of the Company to (i) sustain profitability when anticipated, (ii) continue to rely on its customers and other third parties to provide additional products and services that create a demand for its products and services, (iii) conduct its business in foreign countries, (iv) adapt and integrate new technologies into its products, (v) expand its business offerings in the new wireless data industry, (vi) develop software and provide services without any errors or defects, (vii) protect its intellectual property rights, and (viii) implement its sales and marketing strategy.

Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to update or revise the information in this press release, whether as a result of new information, future events or circumstances, or otherwise.

About RIM

Research In Motion Limited is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers to enhance their products and services with wireless connectivity to data. RIM's portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry™ wireless platform, the RIM Wireless Handheld™ product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the NASDAQ Stock Market (NASDAQ: RIMM) and the Toronto Stock Exchange (TSX: RIM). For more information, visit www.rim.com or www.blackberry.com.

The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties of Research In Motion Limited.