Sonus Technology Helping Cybertel to Build World's Most Advanced VoIP/VoDSL Network.

Business Editors & High-Tech Writers

LA JOLLA, Calif.--(BUSINESS WIRE)--June 1, 2000

Cybertel to become the first major carrier focused exclusively on

Internet telephony - to introduce an advanced VoIP network with 1+

dialing

Cybertel Communications Corporation (OTC BB:CYTP), which announced last week that it has signed a multi-million dollar deal with VoIP technology's fastest rising star, Sonus Networks (Nasdaq:SONS), is now beginning construction of what it believes will be the world's most advanced Internet telephony network. The high-speed network will depend heavily on Sonus' state-of-the-art switching technology to move VoIP and VoDSL traffic effectively and inexpensively. Both Cybertel and Sonus expect to have this revolutionary new telecommunications network fully functional in six major U.S. markets by September of this year.

"We are about to blow the doors off of the tired old telecommunications industry," declares Cybertel's CEO, Richard Mangiarelli. "We have worked hard over the last year or so to position our company as a true leader in the new breed of `Integrated Communications Providers' that are reinventing the industry. We are showing the residential and commercial consumer that one single company can be their best choice for local, long distance telephone service as well as high-speed Internet access, and DSL services in a single bundled digital product offering. And best of all, we are showing them that we can do it better and cheaper than the dinosaurs that have provided many of those services in the past."

Cybertel plans to expand its network over the next year to include 56 gateways around the U.S., which will serve the entire country. The Sonus gateways give Cybertel a significant advantage over its competition. Once installed, Cybertel will be the only other company with an all-IP network capable of worldwide 1+ dialing, besides Level 3 Communications (Nasdaq:LVLT). It will also make Cybertel the only company that focuses exclusively on Internet-based telephony and Internet services to possess this type of advanced IP network.

Cybertel has also beefed up its operations extensively over the past few months through strategic acquisitions. In April, the company acquired New York-based LDVL, one of the brightest newcomers in the B2B Digital Subscriber Line (DSL) service business, expanding Cybertel's VoIP telephony services from coast to coast. Other strategic acquisitions in the past year have included Telenomics and LikeDat, both of which are expected to help the company compete with integrated digital offerings.

"We didn't take the decision to partner with Sonus for our soft switch technology lightly," declares Mangiarelli. "We knew that we needed to be as far ahead of the competition as possible. Once they realize how far they are behind us, it'll take them a long time to catch up. By then, we should have a real stronghold on the market. Sonus' Super switches will help us achieve that stronghold."

Cybertel is expected to begin actual construction of its Sonus network in the next few weeks and plans on having its first six Sonus Super gateways online by the end of next month. That means that the company should have a total of 56 gateways up and running by year end allowing it to originate IP traffic anywhere in the U.S. and terminate anywhere in the world.

"We are planning to deploy POPs in over 120 cities in 56 major U.S. markets," adds Cybertel COO Peter Buswell. "We expect to use a combination of `dial around', local access and true 1+ carrier access over both DSL and VoIP. This means that we needed a true high density gateway, SS7 integration and an integrated Softswitch. SONUS was the only carrier class option on the table. We knew we couldn't build a truly better 1+ network alternative with modified PCs and the other tinker toys that have come to characterize the current crop of VoIP network deployments. Cybertel is about to change the American business communications landscape forever and we believe that only logical choice for a strategic equipment vendor was SONUS."

Cybertel predicts that very soon, you'll see that the telecommunications companies that don't have direct 1+ VoIP dialing capability resorting to calling card type programs where their clients have to dial either a local or 1-800 access number and enter a PIN code just to access someone else's IP network.

"This will severely limit their market potential because customers simply don't want to go through the hassle of dialing long strings of numbers every time they want to place a call. With our service, callers can continue to use their normal dialing patterns. They'll never have to dial any additional numbers or remember an access code, but they still be able to take advantage of the huge savings and superior communications that Internet telephony can offer," adds Mangiarelli.

By being first to market, coupled with "best of class technology and dramatically reduced transmission costs, Cybertel believes that it can offer integrated telecommunications service at levels that major telecom giants can't or won't match, while still maintaining high profit margins

The major telecoms are already scrambling to catch up with the Voice over IP leaders. Recently, an AT&T (NYSE:T) led consortium finalized an agreement to invest $1.4 billion in Net2Phone (Nasdaq:NTOP), taking a 32 percent stake in the young VoIP company. Net2Phone currently handles roughly 40 percent of all phone calls routed over the Internet.

About Sonus Networks

Sonus Networks, Inc. is headquartered in Westford, Massachusetts. The company was founded in 1997 with the mission of building carrier-class network solutions to facilitate the movement of telephony from circuit networks to packet networks, and to enable a new generation of packet-based applications for integrated voice and data services. The Sonus Packet Telephony suite and Open Services Architecture(TM) (OSA) cut the time-to-market for innovative new service products from years to weeks, allowing carriers and third-party developers to build important new revenue streams and reshape the competitiveness and economics of their market. Sonus Networks' products fully interoperate with and extend the life and utility of today's public network.

Many leading corporations partner with Sonus to utilize its OSA technology, including 3-Com Corp. (Nasdaq:COMS), Aspect Telecommunications (Nasdaq:ASPT), NetCentric Corp., Global Crossing (Nasdaq:GBLX), Williams Communications (NYSE:WCG) and BroadSoft Inc. Other major players in the switching industry include Cisco Systems (Nasdaq:CSCO), Lucent Technologies (NYSE:LU), Clarent Corporation (Nasdaq:CLRN), Hypercom Corp. (NYSE:HYC), Franklin Telecommunications (AMEX:FCM) and Inter-Tel Inc. (Nasdaq:INTL).

About Cybertel Communications

Cybertel is a La Jolla, California-based Voice over the Internet Telephony (VoIP) company in the process of building a state-of-the-art Internet Telephony network throughout the United States. Cybertel has recently signed contracts with other major carriers like MCI/Worldcom (Nasdaq:WCOM) and Level 3 Communications, which have made it possible for Cybertel to offer 1+ long distance, 1-800 numbers, regular and pre-paid calling cards and Internet access at some of the most competitive rates on the market today.

In the past, Cybertel has been a switchless carrier, acting as a wholesaler that buys long-distance capacity from large carriers and then resells that capacity to its customer base. Its customers' calls have been routed through other larger telecommunications companies' switches. The nation's largest traditional switched carriers include companies such as MCI/Worldcom, Sprint, AT&T, Global Crossing, Qwest (Nasdaq:QWST) and Williams Communications. Companies offering VoIP related services include ITXC Corp (Nasdaq:IXTC) and VocalTec (Nasdaq:VOCL).

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