Tekelec reportedly demonstrated a high level of communications between two different IP Multimedia Subsystem (News - Alert) (IMS) networks across different continents at the IMS / Next Generation Network (NGN) Plugfest 6 recently held at the University of New Hampshire InterOperability Lab in Durham.

Tekelec (News - Alert) used its flagship product, the Eagle XG Call Session Control Function (CSCF), to showcase its effectiveness by making it interact with Home Subscriber Servers (HSS) to manage, verify and allow calls; an Instant Messaging Application Server (IMAS) to check live voice and text chats; an offline charging system to collect and transmit unique billing and call information; and User Equipment (UE) such as laptops, computers, and IP phones.

It conducted successfully calls between local subscribers located anywhere within their network and cross-continent users working on different platforms, and also calls with reverse roaming case scenarios, to comprehensively illustrate multimedia streaming and video conferencing by creating, modifying and delivering sessions within such diverse environments without a hitch.

The Eagle XG CSFG was also used to demonstrate its Authentication and Key Agreement (AKA) functioning while the IMAS was communicating with next generation networks in a point to multipoint setup. AKA provides two way Janus-like verification and permission to initially proceed with communication between the sender and the recipient and then constantly checks data validity, encryption, metadata and protects against external attacks during sessions. Its seamless AKA advanced functioning was highlighted during multiple and simultaneous interactions between the HSS, IMAS, UE and other CSCF’s.

CSCF is a grouping of Session Initiation Protocol (News - Alert) (SIP) servers used in combination, or individually, to process SIP packet transmissions within the IMS, which delivers and receives multimedia streams over both wired and wireless IP and is an important tool to facilitate fixed mobile convergence.

Typical IMS architecture separates the access network, or transport layer, from the service layer, or application layer, by introducing a horizontal control layer for signal and session management. Tekelec officials justifiably market EAGLE XG CSCF as a bridge between existing and divergent network technologies and NGN’s.

"Tekelec's EAGLE XG CSCF provides the cost-effective scalability, flexibility and reliability to grow with service providers' network needs and manage the complexities of new technologies, resources and applications," said Ron de Lange, executive vice president at Tekelec.