Denver, January 25, 2000 ? Qwest Communications International Inc. (NYSE: Q), the broadband Internet communications company, today announced it has been awarded a $10 million, three-year contract from Call Sciences?, Inc., a telecommunications technology company that supplies network operators, wireless carriers, resellers, and Internet service providers with enhanced telecommunications services.

Under the agreement, Qwest will provide Call Sciences carrier services, including domestic origination and termination, international termination, frame relay and Internet service.  With this new pact, Call Sciences has consolidated all its main services with Qwest, assuring the lowest rates for its customers and the reliability of a primary provider.

"Call Sciences is an innovative, global provider of enhanced telecommunications services that recognizes the importance of a reliable, high speed network to deliver its communications services to its customers," said Gregory M. Casey, Qwest's senior vice president of wholesale markets.  "Call Sciences' customers will benefit from the lower cost and reliability afforded by designating Qwest's fiber optic network as its primary provider."

In an environment where people now typically communicate via phone, fax, mobile phone, pager, e-mail and voice mail, Call Sciences manages all these applications on an outsourced basis from a Telco-grade, enhanced services platform that is scalable, reliable and economical.  This unified communications management service allows the customer to be in control of how and when they are in contact with others and enables network operators to attract and retain those customers despite a highly competitive marketplace.

"The relationship with Qwest is an example of our commitment to the future and system infrastructure for our growing customer base," added James Healy, Director of Product Management for Call Sciences. "Ovum analysts predict that U.S. demand for Personal Assistant and Unified Messaging Services will swell from nearly two million subscribers this year to more than 140 million in 2006. Qwest will provide Call Sciences with the voice, data and Internet networking we require to support this tremendous growth and maintain our price leadership position."

About Call Sciences, Inc.
Founded in 1994, Call Sciences is an innovative telecommunications technology company that develops and markets enhanced communication services deliverable over global intelligent networks.  For service providers, Call Sciences provides an enhanced services platform that unifies multiple applications such as voice activated unified messaging, its flagship single number solution Personal Assistant Symbol®, pre-paid and post-paid calling card, voice and fax messaging and conferencing. Call Sciences differentiates itself by offering enhanced services through its service bureau nodes deployed throughout the U.S. and U.K.  Call Sciences is a privately held international company headquartered in Edison, New Jersey and has offices in Slough, United Kingdom.  For more information, visit the company website at

About Qwest
Qwest Communications International Inc. (NYSE: Q) is a leader in reliable, scalable and secure broadband Internet-based data, voice and image communications for businesses and consumers. The Qwest Macro Capacity® Fiber Network, designed with the newest optical networking equipment for speed and efficiency, spans more than 24,500 miles in North America. In addition, KPNQwest (Nasdaq: KQIP), Qwest?s European joint venture with KPN, the Dutch telecommunications company, is building and will operate a high-capacity European fiber optic, Internet-based network that will span 9,150 miles when it is completed in 2001. For more information, please visit the Qwest web site at

This release may contain forward-looking statements that involve risks and uncertainties. These statements may differ materially from actual future events or results. Readers are referred to the documents filed by Qwest with the SEC, specifically the most recent reports which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements, including potential fluctuations in quarterly results, dependence on new product development, rapid technological and market change, failure to maintain rights of way, financial risk management and future growth subject to risks, Qwest's ability to achieve Year 2000 compliance, adverse changes in the regulatory or legislative environment, and failure to complete the merger with U S WEST and achieve projected synergies and financial results timely or at all. This release may include analysts' estimates and other information prepared by third parties, for which Qwest assumes no responsibility. Qwest undertakes no obligation to review or confirm analysts' expectations or estimates or to release publicly any revisions to any forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

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