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In recent years, Internet Protocol (IP) telephony is becoming popular because it offers more flexibility in the implementation of new features and services. Session Initiation Protocol (SIP) is a peer-to-peer, multimedia signaling protocol standardized by the Internet Engineering Task Force (IETF) plays a vital role in providing services to IP telephony. SIP is ASCII-based, resembling HTTP, and reuses...
Multimedia conferencing is becoming a hot topic of communication in recent years. There are already a few products of multimedia conferencing based on H.323. SIP, which is a more feasible protocol, is put on the agenda of being the call signaling protocol for conferencing. Most of the researches on SIP-based multimedia conferencing, however, have still remained on theories or experiments. In this...
The purpose of this paper is to provide an insight in the process of obtaining and interpreting values of the collection of metrics that are intended for performance evaluation of the Session Initiation Protocol (SIP). Three of the analyzed metrics are defined in a recently proposed Internet Engineering Task Force (IETF) draft, however, additional two metrics addressing negotiation and renegotiation...
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