This press release I found today could be of interest:

Telecom New Zealand International and Veraz Networks Announce Successful Completion of GSMA IPX Trial

Multi-operator trial demonstrates value of IPX for interconnecting diverse networks

SAN JOSE, Calif.--(BUSINESS WIRE)--Telecom New Zealand International (TNZI), a global provider of international voice termination services, IP voice, data, video telephony and other enhanced services to mobile and fixed operators and Internet service providers, and Veraz Networks, Inc. (NASDAQ:VRAZ), the leading provider of Multimedia Generation Network application, control, and bandwidth optimization products, today announced that they have successfully completed a multi-operator global trial of the GSM Association (GSMA) IP eXchange (IPX) framework for IP-based network interconnect services.

The IP eXchange (IPX) is a global private IP network, supporting end-to-end quality of service, and the principal of cascading interconnect payments for next generation GSM and CDMA mobile operators, fixed line service providers and application service providers. In order to provide these features the IPX is service aware unlike the Internet and the GPRS Roaming Exchange (GRX). With over seven hundred mobile operators, serving three billion mobile subscribers, looking for value-added interconnect solutions to extend their service reach, IPX is expected to quickly become the dominant global peering arrangement.

TNZIs IPX trial network involved four other carriers, including Telekom Austria and MTT, connected to TNZI as IPX Provider-Service Provider pairs. The testing demonstrated the ability of the IPX architecture to provide a secure IP-based platform for interconnecting mobile and fixed operators. In addition to VoIP peering, the trial also demonstrated value-added services including transcoding, security features provided by Verazs Network-adaptive Border Controller as well as VoIP to PSTN interworking that IPX providers can use to differentiate their offering.

Verazs IPX solution has been successfully tested by multiple IPX providers interested in offering IPX services and the results of this latest trial continue to validate Verazs leadership in this market. Verazs IPX solution includes the ControlSwitch converged TDM and IP softswitch, the Network-adaptive Border Controller family of security products and the I-Gate 4000 family of media gateways. The ControlSwitchs powerful policy-based routing engine and interworking of SS7, SIP-I and SIP protocols; the I-Gate 4000 media gateways enhanced media management capabilities; and simplified end-to-end operations support are key attributes of Verazs IPX solution and provide a complete platform for offering advanced IPX services.

TNZI was pleased to work with Veraz Networks to substantiate the feasibility of the GSMA-defined IPX, said Ian Neale, President Business Futures, Telecom New Zealand International. We believe that IPX provides an ideal next generation technical architecture and business framework for interconnecting IP and TDM services between mobile and fixed service providers and that the Veraz-based architecture will give us the capabilities and flexibility needed to be a competitive IPX Provider.

We are happy to be working with TNZI to demonstrate the benefits of the GSMA IPX, noted Dawn Hogh, Veraz VP of Marketing. The comprehensive support for both TDM and IP services and the value-added services capabilities of Verazs IPX solution will enable TNZI to continue to be a leading international service provider with innovative voice and data interconnect services.