TeleCommunication Systems Selected by RadioMovel, an Affiliate of Inquam, for European AGPS Precise Location Solution.

Business Editors/High-Tech Writers

LONDON--(BUSINESS WIRE)--April 28, 2004

Xypoint Location Platform to be Deployed with Inquam Affiliate Across Europe

TeleCommunication Systems (TCS) (NASDAQ:TSYS), a global leader in wireless data technology, has signed an agreement with mobile network operator RadioMovel to supply its first Code Division Multiple Access (CDMA) Assisted Global Positioning System (AGPS) precise location solution throughout Europe. Initially to be deployed with the Inquam affiliate RadioMovel in Portugal, TCS' solution will allow Inquam to offer a variety of Location-Based Services (LBS) to its growing subscriber base.

TCS will supply its Xypoint(R) Location Platform (XLP) for CDMA networks, which includes Mobile Positioning Center (MPC) and Position Determining Entity (PDE) functionality for a full precise AGPS solution. The MPC processes location requests from handset-based or network-based applications and is assisted by the PDE that executes APGS algorithms in concert with mobile devices to calculate a precise location fix. This function enables the deployment of network-based enterprise applications such as fleet tracking as well as handset-based business applications.

John Clark, Senior Vice President and Managing Director Europe, said, "This is a landmark deal that cements TCS' position in the European Location-Based Services market. Operators are increasingly looking to location to deliver significant revenue from applications and services. Location Based Services are killer applications and, as such, depend heavily on the most precise location technology."

Paul Calcott, Vice President of Operations for Inquam said, "TCS' expertise and proven experience in the location market was a deciding factor in securing the deal. TCS is our partner of choice in delivering a secure, scalable, precise location platform. Inquam's customer base, which includes fleets, commercial enterprises and dispatch operations is perfectly suited to best advantage the latest and most dependable location services. Now our customers will be able to take full advantage of TCS' proven location applications and services offerings."

ABOUT TELECOMMUNICATION SYSTEMS, INC.

TeleCommunication Systems, Inc. (TCS) (NASDAQ:TSYS) is a leading provider of mission critical wireless data solutions to carriers, enterprise and government customers. TCS' wireless data offerings include location-based Enhanced 9-1-1 services, and messaging and location service infrastructure for 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. For more information visit www.telecomsys.com.

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) 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 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 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.