Delta Three First to Deploy Ericsson's New, SS7Enabled IP Gateways; Higher Quality, Greater...

NEW YORK--(BUSINESS WIRE)--April 14, 1999--

Delta Three, Inc., a subsidiary of RSL Communications, Ltd. (NASDAQ:RSLC), today became the world's first Internet Telephony carrier to implement Ericsson's upgraded IPT 1.6 telephony gateways in its global network. The new system, initially

"The key to offering reliable, diverse services is to have your IP gateway act as much like a traditional telco switch as possible," said Noam Bardin, Chief Technology Officer of Delta Three. "By implementing SS7 enabled gateways, Ericsson and Delta Three have pushed IP communications to the next level."

Ericsson's IPT 1.6 gateways are considered "next generation" because of the significant improvements they impart over other IP Gateway technologies used by most other carriers. These enhancements include SS7 (Signaling System 7) compatibility; open architecture with a real time operating system, and scalability. SS7 enabled gateways communicate with traditional telecom switches seamlessly. "We now speak the same language," said Erland Lonaeus, managing director Ericsson IP Telephony. "The new gateway enhances the intelligence of the Delta Three network. The SS7 compatibility insures increased reliability in handing off calls to traditional networks and transferring calls between multiple applications, which is a huge advantage for implementing Value Added Services."

In addition, the Ericsson IPT 1.6 gateways have an open architecture based on CompactPCI, which means that increasing capacity on the Delta Three network is as simple as adding a few boards. The gateways also use a real time operating system for flexibility and greater reliability. The new IPT 1.6 is scalable to 780 channels up from 30 channels in the previous version of gateways.

Delta Three is a wholly-owned subsidiary of global communications provider RSL Communications, Ltd. Established in 1996, Delta Three was the first company to launch Phone-to-Phone Internet Telephony services. Today, Delta Three operates the world's largest global managed IP Telephony network, with 37 points of presence in 29 countries. Using its expanded network, Delta Three will focus its online presence as a Communications Portal, offering interactive voice, fax, e-mail, paging, voicemail, roaming services, messaging and other products which can be accessed via regular telephones or Delta Three's website at www.deltathree.com. Delta Three marketing and technology partners include: Telenor Nextel, theglobe.com (NASDAQ: TGLO), and Ericsson (NASDAQ: ERICY).

About Ericsson

Ericsson is the leading provider in the new telecoms world, with communications solutions that combine telecom and datacom technologies with the freedom of mobility for the user. With more than 100,000 employees in more than 140 countries, Ericsson simplifies communications for its customers - network operators, service providers, enterprises and consumers - the world over.