GSMA Concludes Trials of Packet-Switched Communications across Mobile Networks
July 22, 2008 // Published as a news service by IHS
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The GSM Association (GSMA) completed trials of voice calls based on the Session Initiation Protocol with encapsulated ISUP (SIP-I) between core networks supplied by Ericsson and Nokia Siemens Networks.
The GSMA recommends that mobile operators adopt SIP-I, which is used by fixed network operators and transit networks, to control the transmission of packet-based voice between mobile networks.
Using SIP-I will involve less transcoding and provide a higher-quality of service than other protocols while making it easier for mobile operators to achieve end-to-end call control and upgrade their networks in future, according to the GSMA.
The SIP-I trials form part of the GSMA's Internet Protocol Packet eXchange (IPX) initiative to develop a private global IP backbone designed to provide guaranteed levels of quality of service and security to customers of mobile operators and other service providers, said the GSMA.
The GSMA trials tested the SIP-I interoperability of Nokia Siemens Networks and Ericsson mobile softswitches, which connect calls from one device to another. The GSMA plans to conduct further trials to advance the level of interoperability of SIP-I.
Source: GSM Association (GSMA).