QoS Framework for SIP Signalling

A.A. Kist and R.J. Harris (Australia)


Session Initiation Protocol (SIP), Quality of Ser vice (QoS), Signalling, IP Multimedia Subsystem (IMS), Universal Mobile Telecommunications System (UMTS)


The Session Initiation Protocol (SIP) is widely ac cepted as the IETF alternative the ITU-T H.323 tele conferencing protocol to enable call and media ses sion management and control. It is also used in carrier grade environments, such as the IP Multime dia Subsystem (IMS) of the 3rd Generation Partner ship Project (3GPP) in emerging Universal Mobile Telecommunications System (UMTS) networks. This paper proposes a framework that enables the Quality of Service (QoS) provisioning for signalling messages. The contributions are twofold: Firstly, it defines an overall framework to enable QoS provision ing for SIP signalling messages in carrier grade net works. Secondly, it outlines existing work that fits into the framework and identifies areas that require further investigation to implement the concepts in car rier grade networks.

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