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CTIA Wireless 2005

ATLANTA--(BUSINESS WIRE)--March 22, 2005

From the Company that Created miniREUTERS(TM), MarketClip, F/X

Alert, TCS Launches marketStream(TM) for BlackBerry Handhelds

TeleCommunication Systems, Inc. (TCS) (NASDAQ: TSYS), a global leader in wireless data technology, today announced that users of BlackBerry(R), developed by Research In Motion (RIM) (NASDAQ:RIMM; TSX:RIM) have a new way to stay informed about the financial world. The marketStream(TM) service provides global, real-time streaming access to equity security prices and volume, foreign exchange rates, futures, commodities and fixed income prices, as well as news and charts via any Java(TM)-based BlackBerry handheld. The service is also compatible with mobile phones and PDAs including the Sony Ericsson P800 and P900 and wireless-enabled PocketPC devices.

The marketStream service was developed by TCS' European subsidiary, Aether Systems, Ltd. Totally wireless and with global coverage, marketStream(TM) utilizes Global Packet Radio Service (GPRS) and third generation networks to stream market data to any Java-enabled mobile device, on any network in any institution.

Unlike other financial information services for mobile devices, marketStream(TM) delivers real-time information in streaming form without user intervention. Data provided by Comstock, a division of Interactive Data Corporation, simply scrolls continuously on the screen in real-time with up-to-the-second accuracy. High-end financial traders and investment brokers now have access to real-time quotes for instruments in over 30 different markets. In addition, TCS has used its years of experience with mobile financial data to provide an extremely streamlined, simple and efficient user-interface for the marketStream(TM) service.

Alexis Davis, Vice President of Mobile Finance for TCS, comments, "We are really proud of marketStream(TM). Basically it's a desktop terminal without the desk. It is the only feature-rich, streaming wireless solution for the financial markets available as a standalone product, so users are not tied to any specific market data vendor or network. Also, because we have focused on this market for over 15 years, our excellent relationships with the Exchanges mean we provide a uniquely comprehensive range of market data. We are excited to bring it to BlackBerry."

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

Significant features of marketStream(TM) include:

-- Alerting Capability - users can set limit alerts on

instruments tracked in their watch list so they are instantly

aware of any price changes.

-- Intraday Charts - marketStream(TM) displays intraday charts

and detailed data for an individual stock index or instrument.

-- Real-time news - news stories from Dow Jones Newswires are

streamed direct in real time. News is delivered as headlines

with the option to view the full story.

TCS' technology is today's most widely used standard for delivery of wireless market data.

About TeleCommunication Systems, Inc. and Aether Systems, Ltd.

Aether Systems, Ltd., a European subsidiary of TeleCommunication Systems, Inc. (TCS) (NASDAQ:TSYS), is the leader in providing mission critical financial data to mobile professionals throughout Europe.

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. For example, Ms. Davis' statement that TCS brings a uniquely comprehensive range of market data services is a forward-looking statement.

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) reach and sustain profitability as 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.

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