150 Global Wireless Operators Rely on Teleglobe for Worldwide Roaming Capability: Teleglobe's Global Roaming Service Lets Millions Use Wireless Phones When Traveling Abroad.

GENEVA, Switzerland--(BUSINESS WIRE)--Oct. 12, 1999--

Teleglobe Remains Largest Provider of Global

Roaming Signaling Services

Germany's VIAG Interkom Signs on as 150th Service User

Teleglobe Communications Corporation, one of the world's leading telecommunications carriers, today announced that it is now providing 150 GSM (Global Standard for Mobile) wireless network operators with worldwide signaling conversion services, enabling their PCS customers to roam and make wireless telephone calls while traveling overseas.

Since launching its GlobePCS(sm) international and North American roaming services two years ago, Teleglobe remains the industry's largest provider conversion services on a commercial basis.

The announcement was made at the Telecom `99 Show in Geneva, Switzerland.

"Teleglobe has made major headway in the wireless communications market in a very short time frame. While other companies have talked about providing a similar signaling conversion and roaming services, Teleglobe has been the market leader for more than two years," said Andrew Burroughs, vice president, global marketing and product management, Teleglobe Communications Corporation.

In addition, Teleglobe announced that its 150th service user is VIAG Interkom GmbH & Co. This conversion platform will allow VIAG Intelkom customers to communicate across international borders even if they roam between networks utilizing incompatible signaling standards. VIAG Intelkom's subscribers will join the other 120 million wireless phone subscribers who already have access to global roaming through GlobePCS.

With Teleglobe's GlobePCS roaming capability, digital public land mobile network (PLMN) operators are provided with cost-effective signaling conversion worldwide and have access to destinations that were not available to them previously. Now GSM and ESMR operators based in North America can offer roaming capabilities to their customers who travel internationally. Similarly, the service enables global GSM operators to offer their customers the ability to place or receive wireless calls when they travel within North America.

Teleglobe's GlobePCS(sm) customers include, in Europe: Belgacom (Belgium), Cellnet (U.K.), Eurotel Praha (Czech Republic), France Telecom Mobiles, Libertel (Netherlands), Mannesmann (Germany), max.mobil (Austria), Mobilkom Austria, Mobistar (Belgium), Omnitel Pronto (Italy), OY Radiolinja (Finland), Radio Mobil GSM (Czech Republic), Sonera (Finland), Stet Hellas (Greece), Swisscom Mobile, Telecom Italia Mobile, Tele-Danmark Mobil (Denmark), Telefonica Moviles (Spain), Vodafone Ltd (U.K.), Westel 900 (Hungaria); in Asia: Celcom (Malaysia), Globetelecom (Philippines), SmartTone (Hong Kong), Singapore Tel, Telstra MobilNet (Australia); in the Middle East: CTA (Cyprus), Turkcell (Turkey); in Africa: MTN (South Africa), Vodacom (South Africa); as well as the eight largest GSM operators in the United States and Canada, including BellSouth Personal Communications, Microcell Connexion, Omnipoint Communications, Pacific Bell Mobile Services and Western Wireless.

About Teleglobe

Teleglobe recently announced that it would invest US$5 billion over the next five years to expand GlobeSystem, the world's first globally-integrated Internet, voice, data and video network. GlobeSystem will increase Teleglobe's currently installed network capacity by an estimated 200-fold, and provides customers with direct network access from 160 major cities worldwide.

Teleglobe Inc. (NYSE, TSE, ME: TGO) is a recognized leader in global telecommunications. Through its subsidiary Teleglobe Communications Corporation, the company develops and supplies global connectivity services to carriers, Internet service providers, business customers and content providers worldwide. Through Excel Communication's proven marketing and distribution channels, Teleglobe also caters to an expanding international consumer customer base.

According to TeleGeography, the company is the fourth-ranked long distance provider in the United States and, according to a recent KMI Corporation study, the third largest owner of undersea fiber optic cable systems. Teleglobe has a 50% interest in ORBCOMM, the world's first commercial low-earth-orbit, satellite-based, data communications system. Additional information is available at www.teleglobe.com.