PRESS RELEASE

APRIL 22, 2003

U.S. CELLULAR SELECTS TEKNO TELECOM'S

NetQUEST SS7 NETWORK MANAGEMENT SYSTEM

NAPERVILLE, Ill. (April 22, 2003) - Tekno Telecom, L.L.C., today announced that U.S. Cellular has deployed the NetQuest SS7 monitoring system to enhance its wireless network efficiency and provide customers with expanded service and billing capabilities.

"This agreement reaffirms our commitment to provide products and services of value to our customers," said Hichem H. Garnaoui, vice president of national network operations for U.S. Cellular. "The reliability and flexibility of Tekno Telecom's SS7 platform will enable U.S. Cellular to more efficiently monitor our network and better position our company for future growth."

"We are pleased that U.S. Cellular has selected Tekno Telecom's technology," said Sam Galler, vice president of Tekno Telecom. "Our solutions provide a high return on investment, which is critical in today's marketplace and will immediately benefit U.S. Cellular's customers."

About U.S. Cellular

U.S. Cellular Corporation, the nation's eighth-largest wireless service carrier, provides wireless service to approximately 4.1 million customers throughout 149 markets in 25 states. The Chicago-based company operates on a customer satisfaction strategy, meeting customers' needs by providing a comprehensive range of wireless products and services, excellent customer support and a high-quality network. For more information about U.S. Cellular, visit the company's Web site at www.uscellular.com.

About Tekno Telecom, LLC

Tekno started in 1968 in the telecom sector and has implemented over 10,000 systems worldwide. Migrating from call accounting systems to traffic management solutions (which front-ended switches) to call completion and billing systems. Tekno has been a pillar of telecom network management, maintenance, and revenue assurance solutions. Tekno focuses on high return on investment systems for wireline, wireless and next-generation carriers and has consistently brought to market products that were more advanced and accurate than its competitors. Its engineering team has generated numerous patents, which today allows offering supremely efficient and accurate systems necessary for today's carriers to confidently know what is occurring in their networks in order to solve problems and collect the revenues due to them. Tekno's focus has consistently relied on data/information collected, not from the switch, but directly from the network (MF, SS7, ATM, and IP, etc.). Network data is rich in information and Tekno's products use advanced techniques to extract and correlate tremendous volumes of data into useful information for the carriers. Most importantly, Tekno is on the cutting edge of technology and is ready for today's newest networks while still supporting legacy telecom networks. For more information about Tekno Telecom visit www.teknotelecom.com or call (630) 579-9800.

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For more information, contact Mary Pettersen and/or Deborah Stasiak as listed below:

Mary Pettersen	Deborah Stasiak
Cushman/Amberg for U.S. Cellular	Tekno Telecom, LLC
Phone: (312) 263-2500	Phone: (630) 579-9880, Ext. 238