CompleTel Chooses TCSI's WorldWin Product Top Systems Integrator Sema Group Integrates WorldWin in CompleTel IT System.

ALAMEDA, Calif.--(BUSINESS WIRE)--May 11, 1999--

TCSI Corporation (Nasdaq:TCSI), a leading provider of software for the telecommunications industry, today announced that they have signed an agreement with Sema Group, a world leading European systems integrator, to deliver TCSI's WorldWin(R) Suite of products to CompleTel LLC, an emerging communication service provider with its European headquarters in Paris, France.

This transaction is the first opportunity for TCSI to showcase WorldWin in Europe since the company acquired the product last December.

The WorldWin product will provide CompleTel with key benefits such as the ability to quickly identify and define new services, automate service provisioning, and provide an integrated view of the diverse network equipment for network surveillance, control and provisioning.

"The use of the WorldWin products and the team of TCSI and Sema Group as CompleTel's systems integrator, will help us be more competitive in the recently opened European telecom market," said John Puhl, chief information officer for CompleTel. "The software provided by TCSI and the integration services provided by Sema are critical components of our plan to roll out a variety of telecommunications services in our initial European markets: France, Germany and the United Kingdom. TCSI provides the right combination of software and services that will enable us to manage today's networks and services, and grow with us as we roll out the network of tomorrow."

Under terms of the agreement, TCSI will install its WorldWin products at the CompleTel facility in France, and provide professional services to assist Sema Group with the implementation of the product. Sema Group will integrate WorldWin in the CompleTel IT system, also including data warehousing and billing modules, to provide a complete integrated OSS environment for CompleTel, and will provide on-site implementation and support for CompleTel. TCSI will provide an initial series of training, maintenance support and professional services to Sema Group in support of its customer's requirements.

"We are very pleased to finalize this arrangement with Sema Group to deliver a complete solution to CompleTel," said Jay Lark, TCSI's vice president of marketing. "This project is an excellent fit for our products and we are delighted to have the opportunity to work with Sema Group in bringing the customer on line. We have an ambitious implementation schedule driven by the highly competitive telecommunications marketplace, and our products are positioned to provide CompleTel the advantage it seeks as it develops market share in France."

CompleTel is one of the first new telecom service providers to compete in the recently deregulated French market and in Germany and the United Kingdom. "While we expect competition in the French market, CompleTel's competitive advantage is our ability to move quickly," said Puhl. CompleTel plans to begin offering services immediately, utilizing WorldWin as the key component of its service provisioning process.

"Part of CompleTel's strategy is to compete with diverse and high quality service offerings, including rapid service provisioning, flexible billing format, and a wide range of voice and data services," said Francois Dufaux, Senior Vice President of Sema Group. "The WorldWin Suite provides the functionality and time-to-market benefits that will allow us to deliver a leading edge OSS environment to CompleTel," he added.

Specific details of the agreement were not disclosed, however the deal is valued at several million dollars. Sema Group will acquire a one-time right to sublicense WorldWin to CompleTel.

About TCSI Corporation

TCSI is a leading provider of integrated software products and services for the global telecom industry. A recognized innovator in component-based applications technology, TCSI products and services enable telecom service providers, equipment manufacturers, and systems integrators to rapidly meet the growing demand for automated management of a wide range of networks and services. The Company offers SolutionCore(R), a telecom applications development and deployment platform, SolutionSuites(R), sets of packaged, highly-configurable OSS applications, and SolutionServices(tm), specialized OSS related consulting services. TCSI serves its customers in offices throughout North America, Europe, and the Pacific Rim. TCSI is located at 1080 Marina Village Parkway, Alameda, CA, 94501, [phone], fax: [phone], http://www.tcsi.com.

About CompleTel, LLC

With its US headquarters in Denver, CompleTel, LLC opened its European headquarters in the Netherlands and French headquarters in Paris in l998. As a European facilities-based competitive local exchange carrier (CLEC),CompleTel will use its local fiber networks to offer a wide range of fully integrated telecommunications services. These products and services include switched local exchange services, special access and private line services, high speed data services through packet data and switched ISDN services, Internet access, and long distance resale. The French headquarters for CompleTel LLC is located at Washington Plaza, Immeuble Artois, 44, rue Washington 75408 Paris Cedex 08, [phone], fax [phone], http://www.completel.com.

About Sema Group Telecoms

Sema Group Telecoms is the international telecommunications business unit of Sema Group. With more than 18,000 employees across Europe, Asia, and the Americas and 1998 revenues of over $2 billion, Sema Group is one of the world's leading information technology companies in consulting, systems integration, outsourcing and software products. Sema Group Telecoms serves more than 160 networks and 54 million subscribers world-wide. Further information can be obtained from [e-mail], www.semagroup.com.

This press release contains certain forward-looking statements as that phrase is defined in the Private Securities Litigation Reform Act of 1995, including statements regarding the Company's ability to deliver the WorldWin Suite of products as scheduled. Such forward-looking statements are subject to a number of risks and uncertainties which could cause actual results to differ materially from those projected. Such risks include but are not limited to the following: The Company's ability to deliver products as scheduled, the acceptance of the WorldWin Suite of products in Europe and the failure to successfully implement the company's products. Further risks are detailed in the Company's filings with the Securities and Exchange Commission, including its most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q.

For further information on TCSI Corp., please call their automated faxback line at 800/264-1603 or join us on the World Wide Web at http://www.tcsi.com.

Note to Editors: TCSI and SolutionServices are trademarks of TCSI Corp. SolutionCore, SolutionSuites, and WorldWin are registered trademarks of TCSI Corp. All other products and services listed herein are trademarks of their respective companies.