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FALL 2001 VON BOOTH # 1100/1102/1201/1203

WESTFORD, Mass., October 15, 2001 – At Fall 2001 Voice on the Net (VON) this week, Sonus Networks (Nasdaq: SONS) will highlight technology trends in packet voice infrastructure and related services through participation in several conference presentations, as well as live demonstrations of packet-based voice solutions and services. Fall 2001 VON is being held October 15-18, 2001 at the Georgia International Convention Center in Atlanta, Georgia. 

Industry experts from Sonus are taking an active role in the educational portion of the conference, and will be participating in the following sessions:

Monday, October 15, 2001, 10:50 am - 11:10 am
"PSTN/IP Gateways and Softswitches"
Speaker: Wesley Hicks, office of the CTO

Tuesday, October 16, 2001, 11:15 am - 11:45 pm
"Industry Perspective"
Speaker: Hassan Ahmed, president and CEO

Tuesday, October 16, 2001, 3:35 pm - 4:40 pm
"VC 102: 1st and 2nd Stage Funding"
Speaker: Rubin Gruber, founder and chairman

Wednesday, October 17, 2001, 9:35 am - 10:45 am
"Merger and Acquisitions Strategies"
Speaker: Rubin Gruber, founder and chairman

Thursday, October 18, 2001, 2:30 pm - 3:45 am
"Managing Traffic and the Softswitch"
Speaker: Bob Dye, director, product marketing

Thursday, October 18, 2001, 4:00 pm - 5:15 pm
"3G Wireless and the Softswitch"
Speaker: Bob Dye, director, product marketing

In addition to participating in the conference program, Sonus, along with 11 of its Open Services Partner AllianceSM (OSPA) members, will be showcasing packet-based solutions and enhanced services in live network demonstrations. The Sonus Networks exhibit will feature fully interoperable, end-to-end solutions deployed in carrier applications including long distance and access services, and will highlight enhanced services such as prepaid calling cards, conferencing and unified messaging. 

Members of the Sonus OSPA program participating in this demonstration of packet-based solutions include:

• Copper Mountain Networks (www.coppermountain.com), providing the CopperEdge(R) 200 DSL Concentrator, CopperRocket(R) 201 SDSL CPE and CopperRocket(R) 508 Integrated Access Device (IAD)
• dynamicsoft (www.dynamicsoft.com), supplying its SIP Proxy Server
• IPeria (www.iperia.com), with its ActivEdge Enhanced Communications System for unified communications
• Juniper Networks (www.juniper.net), providing its M10 Internet router
• Mitel Networks (www.mitel.com), with its Mitel Networks 5055 SIP phone
• Occam Networks (www.occamnetworks.com), providing its Broadband Loop Carrier, the BLC 1100
• Pactolus Communication Software (www.pactolus.com), with its SIPware^(TM) Prepaid Calling Card application
• Pingtel (www.pingtel.com), supplying its Pingtel xpressa^(TM) Java-based SIP phone
• Polycom (www.polycom.com), with its NetEngine 6200 IAD
• Riverstone Networks (www.riverstonenet.com), providing its RS Series of aggregation routers
• Voyant Technologies (www.voyanttech.com), contributing its ReadiVoice IP conferencing solution

Additional information on Fall 2001 VON can be found at http://pulver.com/von/.

About Sonus Networks

Sonus Networks, Inc. is a leading provider of voice infrastructure products for the new public network. Sonus' solutions enable service providers to deploy an integrated network capable of carrying both voice and data traffic, and to deliver a range of innovative, new services. The Sonus Open Services Architecture (OSA) and award-winning Packet Telephony suite cut the time-to-market for competitive new service products, allowing carriers and third-party developers to expand market share and build important new revenue streams. Its highly scalable products fully interoperate with and extend the life and utility of today's public network. Sonus embodies in its management and staff decades of experience in developing carrier-class voice, data and multimedia solutions for implementation in the world's largest networks. Sonus, founded in 1997, is headquartered in Westford, Massachusetts. Additional information on Sonus is available at http://www.sonusnet.com.

Open Services Partner Alliance is a service mark and Open Services Architecture is a trademark of Sonus Networks. All other company and product names may be trademarks of the respective companies with which they are associated.