Viatel, Inc. CEO and Citicorp Venture Capital Advisory Board Member Join Sonic Telecom, Ltd. Board of Directors

CHANTILLY, Va. (PROTEXT) - Sonic Telecom, Ltd., announcedtoday the election of two new Board members. In a meeting held onDecember 2, 1999, shareholders elected Mr. Michael J. Mahoney andDr. Aldo Fozzati. Mr. Mahoney was elected by the holders of theCompany's Class B Preferred stock and Dr. Fozzati represents allclasses of shareholders. The election of these directors marksanother instance in which the Company has attracted theinvolvement of key individuals from the telecommunications sectorand industries that rely heavily on international bandwidth. Mr. Michael J. Mahoney is the Chairman of the Board, Presidentand Chief Executive Officer of Viatel, Inc. (Nasdaq: VYTL). Mr.Mahoney has served as a director of Viatel since 1995, asChairman since September 1998, as Chief Executive Officer sinceSeptember 1997 and as President since September 1996. Mr. Mahoneyjoined Viatel in July 1994. Before joining Viatel, Mr. Mahoneyheld senior management positions with SITEL Corporation, ateleservices company and URIX Corporation, a manufacturer oftelecommunications hardware and software. "Sonic Telecom's end-to-end solutions nicely complement anetwork owner/operator's offerings. They eliminate for broadbandusers the financial burden of maintaining multiple networks,making more resources available for companies' core businesses."stated Mr. Mahoney. Dr. Fozzati is currently a member of the advisory board forCiticorp Venture Capital, Citibank, N.A. (NYSE: C). He also sitson the boards of several companies in Europe: Balke Durr inGermany, BDT in England and MSX in Italy. "Sonic Telecom is unique in providing bandwidth-on-demand andbilling by- the-byte -- this is what global companies wantbecause it enables effective management of the fastest growingcomponent of their international telecommunications budgets. I amthrilled to be involved with the company that is reshaping thetelecommunications industry, Sonic Telecom is going to be big!"stated Dr. Fozzati. During his career, Dr. Fozzati has held various positions inthe automotive industry including Managing Director Europe forJAC Holding, Vice President European Operations and GeneralManager, Kelsey-Hayes, Europe. He has also held senior managementpositions with General Motors and Fiat in Europe. In welcoming them, former Congressman and recently electedChairman of the Sonic Telecom Board of Directors, Joseph P.Kennedy II, noted: "Mike and Aldo's involvement in Sonic Telecomsends a clear message to the financial, manufacturing andtelecommunications industries that there is a better approach toprocuring bandwidth that should be considered." Todd Ruelle, President and CEO of Sonic Telecom, Ltd. addedthat "Sonic Telecom's network was created for business on aglobal scale, naturally, people in the telecom industryrecognized that first. Now, the manufacturing and banking sectorsrealize the value of our service offering and our Board reflectsthat." Mr. Mahoney and Dr. Fozzati join Mr. Kennedy, Chief ExecutiveOfficer of Citizen's Energy, Herb Hribar, Chief Operating Officerof Verio, Inc. (NASDAQ: VRIO), John G. Englesson, Vice Presidentof Conversion for Nextlink Pennsylvania (NASDAQ: NXLK) on SonicTelecom's Board of Directors. About Viatel, Inc. Viatel, Inc. is an integrated provider of communicationsservices -- including voice, data, Web access and bandwidth -- inover 230 countries and territories worldwide. Its customersinclude individual consumers, businesses, Internet serviceproviders, other carriers and resellers. Viatel currentlyoperates a global network which includes one of the largest pan-European networks, international gateways in London and New York,state-of- the-art international network operations centers,network points of interconnection in over 200 cities, and adirect sales force throughout Western Europe. About Sonic Telecom, Ltd. Privately-held Sonic Telecom is an international digitalcommunications solutions provider of access, transport andtermination for transmission of video, data and voice on a singleasynchronous transfer mode (ATM) network at a fraction of thecost -- and with greater flexibility -- than private lines andframe relay services. The Company's senior management hasextensive experience in telecommunications having held seniorpositions in engineering and marketing with MCI, WorldCom,Sprint, Perot Systems and EDS. General DataComm (NYSE: GDC) andViatel International, Inc. (NASDAQ: VYTL) are equity holders andstrategic partners of the company. For additional information, visit the company web site atwww.sonictelecom.com. ots Original Text Service: Sonic Telecom,Ltd. Internet: http://www.newsaktuell.de Contact: Santiago Testaof Sonic Telecom, Ltd., 703-227-5238, Fax: 703-818-8683, orS.Testa@sonictelecom.com Web site: http://www.sonictelecom.com

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