Sonus Networks Delivers Real-World Services At Supercomm 2001

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SUPERCOMM 2001 BOOTH #2312

Sonus and 32 OSPA Partners Show Live, End-to-End Network Solutions with Enhanced Services; Booth Demonstrations Offer Attendees Hands-On Experience with Leading Applications

WESTFORD, Mass., June 4, 2001 – Sonus Networks (Nasdaq: SONS), a leading provider of voice infrastructure solutions for the new public network, is showcasing a wide range of innovative, next-generation products, services and solutions in a live IP/PSTN network at the SUPERCOMM 2001 exhibition and conference being held June 4-7, 2001 in Atlanta, Georgia. In close collaboration with more than 30 of its "Powered" Open Services Partner Alliance (OSPA) members, Sonus will afford SUPERCOMM attendees the opportunity to experience a plethora of exciting, packet-based, enhanced services first-hand.

"The solutions that Sonus and our OSPA partners are bringing to carriers will change the way people work, travel, play and live," said Terri Griffin, vice president, marketing programs, Sonus Networks. "One of the main goals of our demonstrations is to show that these services are real, they're available today, and they are completely interoperable. Moreover, the solutions that we are highlighting in our booth will allow carriers to improve competitive positions, and will enable business users and consumers to enjoy greater productivity and convenience."

The Sonus Networks exhibit features solutions and services operating in office, home and travel environments. Additionally, Sonus will be sponsoring the Sonusnet cafe, where booth visitors can relax and participate in hands-on, interactive demonstrations of a variety of services and endpoints that are running in the showcase.

• In the Sonus Inspired Office, attendees will experience next-generation office solutions and services, such as unified communications, which allows users to manage voicemail, email and faxes from a single web-based location, and reservationless conferencing, through which users have the ability to use a web-based moderator interface to establish conferences "on the fly" without reserving resources weeks in advance.  
• The Sonus Inspired Home features IP services that will simplify and enhance consumers' everyday lives. For instance, enhanced communications with buddy lists are a teenager's dream, providing PC-based voice over IP (VoIP) calls and text chat along with video feeds. Other popular applications for the home include conferencing, web-managed voicemail and prepaid calling cards.
• The Sonus Inspired Travel environment presents applications and solutions that enhance users' productivity, making working on the road as easy as being in the office. Road warriors can rely on presence management capabilities to direct their phone calls, faxes and email to them, regardless of location. Other services and solutions targeting the traveling workforce include instant messaging, dynamic conferencing, wireless PDAs with click-to-talk and more.

At the very heart of this interoperability demonstration is Sonus' Open Services Architecture (OSA) and award-winning family of voice infrastructure solutions. The OSA is an open telephony architecture that provides a framework in which carriers can rapidly develop and deliver a range of traditional and enhanced services, in "Internet time".  

In the exhibit, Sonus' carrier-grade softswitch platforms, the INtelligentIP Softswitch and the PSX6000 Softswitch, control a range of devices via the SIP, MGCP and H.323 protocols and enable the wide variety of services shown in the demonstration. Sonus' GSX9000 Open Services Switch provides connectivity to the PSTN, transporting traffic from the packet voice network in Sonus' booth to the circuit switched voice network. The SGX2000 SS7 Signaling Gateway delivers access to critical PSTN signaling, ensuring compatibility between applications common to both the packet and circuit networks.  

Members of the Sonus OSPA program participating in this extensive demonstration of packet-based solutions for the office, home and travel include:

• Acterna (www.acterna.com), providing its NetOptimize Capacity Manager OSS software
• AccessLan (www.accesslan.com), supplying the PL-1014 MTU DSL Router and PL-200 SDSL CPE Router
• ADTech (www.adtech.be), contributing the tipcome SI-150 SIP Phone
• alexis (www.alexis.com), delivering its alexis-ESP Application Server
• AudioCodes (www.audiocodes.com), offering its MP-100 MGCP media gateway subsystem
• BroadSoft (www.broadsoft.com), with its BroadWorks Application Server
• Copper Mountain (www.coppermountain.com), providing the CopperEdge(R) 200 DSL Concentrator, CopperRocket(R) 201 SDSL CPE and CopperRocket(R) 508 Integrated Access Device (IAD)
• congruency (www.congruency.com), contributing its i.Picasso(TM) 6000 IP Telephone and CNS 3200 Enhanced Hosted Communications Platform.
• dynamicsoft (www.dynamicsoft.com), supplying its SIP Proxy Server and SIP Location Server
• Ericsson (www.ericsson.com), with the iPulse Client and iPulse Server Presence Management
• HearMe (www.hearme.com), delivering the HearMe SoftPHONE(TM) SIP Client and ConferenceCREATOR(TM) for scheduled and spontaneous IP conferencing.
• Indigo Software (www.indigosw.com), offering its CPL enabled server suite, the Indigo SIP Proxy Server(TM), Indigo SIP Registrar Server(TM), Indigo SIP Location Server(TM) and Service, and the CPL enhanced Indigo SIP User Agent(TM)
• iVB Network Solutions, a division of InterVoice-Brite, Inc. (www.intervoice-brite.com), providing its Omvia(TM) Messaging application
• IPeria (www.iperia.com), with its ActivEdge Enhanced Communications System for unified messaging 
• iTelco (www.i-telco.com), contributing the iTelco IP Conference Server
• Luminous Networks(TM) (www.luminous.com), supplying the PacketWave(TM) Carrier-Class Metro Optical Switch 
• MasterMind Technologies (www.mastermindtechnologies.com), exhibiting its MEDEA Server Platform running 
• Voice Portal, Auto Attendant and Unified Communications applications
• Mediatrix Telecom, Inc. (www.mediatrix.com), delivering its APA III-4FXS IAD
• NexTone Communications (www.nextone.com), offering its Application Switch and Presence Server, and XML interface for wireless communications
• Occam Networks (www.occamnetworks.com), providing its Broadband Loop Carrier, the BLC 1100
• Pactolus Communication Software (www.pactolus.com), with its RapidFLEX Application Server and Prepaid Calling Card application
• Pingtel (www.pingtel.com), supplying the xpressa Java SIP phone
• Riverstone Networks (www.riverstonenet.com), providing its RS Series of aggregation routers
• Sylantro (www.sylantro.com), contributing its Applications-Enabled softswitch
• T&S Software (www.ts-software.com), delivering the Zeus Application Server
• TGF Linux Communications (www.tgflinux.com), also known as Difinium (www.difinium.com), with its V-Bridge (now renamed Mercury) IAD
• Ubiquity (www.ubiquity.net), providing the Helmsman(R) SIP Network Server and Helmsman(R) Application Services Broker
• VegaStream (www.vegastream.com), supplying its Analog Gateway Vega 50 IAD
• VocalData (www.vocaldata.com) with its VOISS Service Delivery Softswitch
• Voyant Technologies (www.voyanttech.com), contributing its IP instant conferencing platform
• Vpacket Communications (www.vpacket.com), providing its 6100 series voice/data routers
• XACCT Technologies (www.xacct.com), with its Real-Time N2B (Network to Business) Platform

About Sonus' OSPA

Founded on the combination of Sonus' Open Services Partner Alliance (OSPA) Program and the INIP PoweredSM Partner Program from the acquisition of telecom technologies, inc., the OSPA has gained significant industry momentum, with membership of more than 140 leading independent vendors. The OSPA provides a framework that offers service providers end-to-end packet-based network solutions using best-of breed technologies and applications. The goal of the OSPA is to empower standards-based interoperability between applications, hardware vendors, and the Sonus product suite. An integral part of the Sonus OSPA, the Interoperability Laboratory is the first in the industry where product interoperability is verified, trial testing is performed, and complete solutions are ultimately produced. Additional information on the OSPA is available at http://ospa.sonusnet.com.

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 ArchitectureTM (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.

This release may contain projections or other forward-looking statements regarding future events or the future financial performance of Sonus that involve risks and uncertainties. Readers are cautioned that these forward-looking statements are only predictions and may differ materially from actual future events or results. Readers are referred to Sonus' Annual Report on Form 10-K, dated March 28, 2001, filed with the SEC, which identifies important risk factors that could cause actual results to differ from those contained in the forward-looking statements. These risk factors include, among others, the Company's ability to grow its customer base, dependence on new product offerings, market acceptance of its products, rapid technological and market change, integration risks relating to the acquisition of telecom technologies and manufacturing and sourcing risks.

Open Services Partner Alliance, GSX9000, PSX6000, SGX2000 and Open Services Architecture are trademarks of Sonus Networks. INtelligentIP is a registered trademark of Sonus Networks. INIP Powered is a service mark of Sonus Networks. All other company and product names may be trademarks of the respective companies with which they are associated.