Activate Selected by Vialog to Expands Its Internet Services With Broadcasting Technology.

SEATTLE--(BUSINESS WIRE)--March 23, 1999--Activate.net Corporation, the leader in business to business broadcast communications on the Internet, announced today (3/18) that Vialog Group Communications(sm) (Nasdaq:VLOG) has selected Activate's streaming audio broadcasting services to its growing family of web conferencing services.

The Internet-based service enables companies to add an unlimited number of participants to an audioconference. To access a conference, participants simply log on to a designated web site and listen in via their multimedia PCs. Audioconferences can be accessed live (real-time) or on-demand (archived). Audio streaming applications include investor relations calls, product review meetings and training sessions.

"We are delighted to be partnering with Vialog in support of its web conferencing services," said Chris Maskill, president of Activate. "Vialog has great reach and expertise in this market, and its customers uniquely understand the value that web broadcasting can bring to group communications applications. We look forward to a long-term, valuable relationship."

Noted Glenn Bolduc, president and CEO of Vialog, "Audio streaming is a great addition to our web conferencing family of services. This further underscores our commitment to facilitate easy and effective group communications in a variety of ways -- whether it be through audio, video, or Internet broadcast. Audio streaming gives Vialog customers the flexibility to easily and economically broadcast audioconferences to many participants using the power and ubiquity of the Internet."

About Activate

Activate is the leading provider of business-to-business broadcast communications on the Internet. It has pioneered the emerging category of Internet-based corporate broadcasting by providing advanced broadcasting services, technology and network infrastructure to deploy audio and video to large, on-line communities. Businesses and their communities rely on timely, compelling information -- delivered where and when they need it.

Activate recognizes the tremendous potential for streaming media to be used as a business-critical communications tool in today's global marketplace. Its technologies allow efficient and effective distribution of real-time information to all Internet audiences. Among its innovations are the Activate Broadcast Network, SwitchBoard -- the first application to extend conference calls to the Internet -- and production of secure, pay-per-view business broadcasts. Clients include: General Motors, Microsoft, Dell, Unocal, AIMR, and TicketMaster Online-CitySearch.

Activate is based in Seattle, Washington and is a privately held corporation. For more information about the company or its services, please visit www.activate.net or call 206/764-3241.

About Vialog Corporation

Headquartered in Andover, Massachusetts, Vialog is a leading provider of group communications services, including audioconferencing, videoconferencing, web conferencing, and automated teleservices (IVR, broadcast fax and fax on-demand). It has one of the largest and most geographically diverse networks of sales and operations centers focused solely on the electronic group communications market. Vialog helps organizations communicate more professionally, efficiently and effectively by delivering superior customer service and an extensive range of enhanced and customized communications solutions. Vialog's common stock (symbol:VLOG) is quoted on NASDAQ's National Market System. For more information, visit www.vialog.com. Vialog Group Communications is a service mark of Vialog Corporation. All other trademarks and trade names are the property of their respective companies.