Centigram's Series 6 communications server to utilize Natural Microsystems Alliance Generation products; NMS Architecture, Products Cited for Performance, Flexibility in Combining Voice, Fax and Data Messaging Capabilities for Communications Applications.

NATICK, Mass.--(BUSINESS WIRE)--Oct. 19, 1995--Natural MicroSystems Corporation (NASDAQ:NMSS) and Centigram Communications Corporation (NASDAQ:CGRM) today announced that Centigram has integrated Natural MicroSystems' Alliance Generation computer telephony products in Centigram's recently-announced Series 6 communications server.

The Series 6 server is a next-generation hardware and software platform for integrated voice, fax and data messaging that offers increased system capacity, industry-leading fault tolerance and redundancy, and a consistent software base across the entire product range. NMS' Alliance Generation architecture enables the development of high-performance communications systems that provide access to a broad range of messaging options, including digital connectivity to virtually any telephone switch or network. Alliance Generation is fully compliant with the defacto Multi-Vendor Integration Protocol (MVIP) standard used by Centigram, which ensures elegant integration with complementary products from a wide range of vendors.

Robert Schechter, president and chief executive officer of Natural MicroSystems, said, "Centigram is the premier global provider of communications solutions. We're pleased that Centigram chose to incorporate NMS' market-leading Alliance Generation products into Series 6. Series 6 and the Alliance Generation are open, scalable, standards-based products, so customers will have the benefit of using technology that delivers an elegant, efficient communications solution that grows with their requirements."

Centigram President and CEO George Sollman said, "Natural MicroSystems is one of the leading suppliers of telephony technology. Integrating NMS' best-of-breed Alliance Generation technology ensures that Centigram provides superior communications technology and performance for our customers."

Natural MicroSystems (NASDAQ: NMSS), based in Natick, Mass., is the leading provider of open, scaleable platforms for the emerging computer telephony integration market. The Company develops state-of-the-art enabling technologies for a growing international network of OEMs, VARs, systems integrators and telephony service providers. Natural MicroSystems products are installed in more than 40 countries worldwide. Founded in 1983, Natural MicroSystems developed Watson, the first product to utilize digital signal processor (DSP) technology in PC-based telephony products, and led the creation of MVIP, the industry standard for interoperability in PC-based telephony products.

Centigram Communications Corporation is a leading global provider of communications solutions. Centigram solves communications problems by integrating voice, data and facsimile on its Series 6 communications server platform, and by providing access to this multimedia information through a telephone or PC.

The Series 6 platform is based on industry-standard hardware and software. Centigram also licenses TruVoicer, its patented text-to-speech software. Centigram is headquartered at 91 East Tasman Drive, San Jose, Calif., 95134. Phone [phone], fax [phone]. World Wide Web http://www.centigram.com. Centigram has sales and support offices in North America, Europe, Asia, Latin America and Australia. -0-

Natural MicroSystems is a trademark of Natural MicroSystems Corporation. All other product or corporate references are trademarks or registered trademarks of their respective companies. Centigram and TruVoice are registered trademarks of Centigram Communications Corporation.

CONTACT: For Natural MicroSystems

Brenda Nashawaty/Julie Gordon

Lois Paul & Partners

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For Centigram Communications Corp.

Robin Foster/Lisa Kelaita

Miller Communications/Shandwick Technologies

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