REMINDER/RHK Media Advisory Tuesday, September 9.

Business Editors

REMINDER...for Tuesday (Sept. 9)

--(BUSINESS WIRE)

RHK:

WHO      RHK -- the premier research and advisory services firm to the
         world's leading telecommunications companies. RHK offers
         continuous research and strategic consulting in the following
         areas:

            --  Technology trends and dynamics

            --  Corporate strategy

            --  Product and market strategies

            --  Network architecture

            --  Telecom economics

            --  Market intelligence and forecasts

            --  Global and regional analysis

WHAT     An RHK analyst teleconference to share the key findings of
         the firm's recently published report "Service Provider
         Metrics Key to True Differentiation". This call will cover
         the current state of the North American service provider
         market, share the evolving network needs of corporate IT
         departments, and provide a framework for assessing Service
         Provider capabilities based on an objective set of network
         metrics. AT&T (NYSE:T), Sprint (NYSE:FON), MCI/WorldCom
         (WCOEQ.PK), are among numerous service provider networks
         analyzed.

         The RHK research report is currently available at
         http://www.rhk.com/rhk/research/overview.jsp. The
         teleconference presentation will post to this link on 9/9.

WHY      Networks are hardly one size fits all. Service Providers
         recently have been making outsized claims regarding their
         network services and performance. One Service Provider will
         claim the best network security, another claims the best
         customer service, and yet another claims the best geographic
         reach. These often cryptic and sometimes conflicting messages
         coupled with recent viruses and network outages have created
         rampant confusion in the market place. These circumstances
         make this the opportune time for RHK to provide clarity.

WHEN/
WHERE    Tuesday, September 9, 2:00 pm EST Teleconference
         U.S.   888 273 9889 Intl 612 332 1025
         Replay 800 475 6701 Intl 320 365 3844 Participant Code 697710

Who should attend: Press, Financial analysts, Investors, corporate IT professionals - any party with an interest/stake in better understanding service provider networks.