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net.com Announces Enhancements to ShoutIP for Even More Elegant VoIP Migration New Features Advance VoIP Capabilities for Enterprise, Carrier and Government Customers BOSTON, Oct. 19 /PRNewswire-FirstCall/ -- net.com (NYSE:NWK) today announced new features for its ShoutIP platform for IP telephony, continuing to build on its industry-leading voice migration solution. Network address translation (NAT) traversal, a challenge for all Voice over Internet protocol (VoIP) networks both in the enterprise and carrier space, is addressed in this release to prevent IP-based voice calls from being blocked by an enterprise firewall. ShoutIP modifies VoIP signaling (SIP and H.323) to ensure a call passes through the NAT correctly. This intelligent relay method enables ShoutIP to work with all types of NAT. ShoutIP also now includes SIP (session initiation protocol) registration for enhanced session border control between SIP-enabled telephones and an enterprise IP PBX, or carrier IP Centrex server. This enables SIP phones in a private network to work with an external proxy in the public network. With SIP registration, ShoutIP enables "round-trip" functionality as it generates and sends registration and invitation requests to the external registrar, or proxy, and authenticates invitations on the return side. This enhancement also dramatically reduces the number of registration entries the network operator is required to make when provisioning VoIP services. Netmarks, one of Japan's largest voice over IP integrators, is currently exploring these capabilities for both enterprise located equipment and within the service provider network. According to Stephen Gleave, Vice President of Marketing at net.com, "The company has long been a proponent of migration over 'rip and replace,' a path that is just not practical for most large enterprises. A migration plan enables customers to leverage existing assets while moving forward to achieve cost savings and deploy new IP functionality long before assets have been written off. This release provides our customers with an even richer feature-set that overcomes some of the challenges to migration." ShoutIP is a family of advanced voice and data networking products that provides an advanced solution for the customer who wishes to migrate to IP. The platform has a unique, distributed architecture that consolidates multiple telephony functions into a single managed platform that supports switching, compression, IVR (interactive voice response), secure voice relay support and PSTN-to-packet gateway functions, eliminating the overhead of multiple devices. As a result, the platform enables enterprises, government agencies and service providers to build IP networks that are scalable, secure and cost effective. The latest release of ShoutIP also offers features specific to government customers and other enterprises requiring secure voice over IP capabilities. These features include a synchronous serial interface that extends connectivity options into other devices, including modems with serial interfaces and radios. ShoutIP also offers basic rate interface (BRI) connectivity to INMARSAT satellite communications gear. Additionally, this release of ShoutIP also supports SS7 signaling for carriers. Telefonica Argentina has recently certified ShoutIP for SS7 connectivity, announced separately today. About net.com Network Equipment Technologies, Inc., doing business as net.com, develops and delivers service creation platforms for broadband, Internet protocol telephony, and multiservice networks. An architect of the networking industry, net.com has been supplying service providers, governments and enterprises around the world with bulletproof networking technology for more than 20 years. net performance. net results. net.com. NOTE: ShoutIP is a registered trademark of, and net.com and the net.com logo are trademarks of Network Equipment Technologies, Inc. DATASOURCE: net.com CONTACT: Brenda Ropoulos, Director of Corporate Relations of net.com, +1-510-574-2508, or ; or Richard M. Williams of Zonic Group, +1-919-554-3532, or , for net.com Web site: http://www.net.com/

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