ACT Networks Appoints Mario A. Uribe as Vice President of Sales.

CAMARILLO, Calif.--(BUSINESS WIRE)--March 10, 1999--ACT Networks, Inc. (Nasdaq:ANET) today announced that, effective immediately, Mario A. Uribe, 50, has joined the company as its vice president of Sales.

Uribe joins ACT from Newbridge Networks where he spent eight years, most recently as vice president of Sales and general manager responsible for the Eastern United States and Israel. While he was vice president of Sales for the Eastern Region, he headed a team of more than 102 salespeople and generated more than $160 million in revenue.

Throughout his 27 year sales career, Uribe has held a variety of leadership positions for telecommunications and other equipment companies, including Timeplex, Inc., Xerox Corp. and Western Union Telegraph Company.

Andre de Fusco, president and CEO of ACT Networks, commented, "We are delighted to add Mario's experience and leadership skills to an already highly qualified team of senior managers at ACT. We expect that his extensive experience in selling complex communications solutions to worldwide carriers as well as large enterprises will add a great deal of value to ACT's sales and distribution efforts."

With the appointment of Uribe, Chris Perna will head up ACT's direct sales efforts to alternative service providers and next-generation telcos.

ACT Networks develops, manufactures, and markets multi-service access products which support a broad range of integrated voice and data networking applications. Service providers and enterprise customers use the company's products to build multi-service networks that are bandwidth efficient, cost-effective and easy to manage.

The company's award-winning NetPerformer(R) product incorporates advanced voice and data compression algorithms, enhanced switching and traffic management capabilities, and state-of-the-art hardware and software integration technologies. For more information about ACT Networks, headquartered in Camarillo, visit the corporate website at http://www.acti.com.

This press release may contain forward-looking statements regarding future events and future financial performance of the company. These statements are only predictions and actual events or results may differ materially as a result of a number of factors including, without limitation, the factors discussed in the company's last Reports on Forms 10-K and 10-Q under "Risk Factors" and the risks associated with the possibility that the market for Frame Relay products will not continue to develop or that the company's products and capabilities will not address emerging market needs; dependence on key and new management; the effect of increased competition; changing technologies, product obsolescence and new product developments; the company's ability to manage its growth, and the company's ability to retain key personnel.