The
Session Initiation Protocol (SIP) is considered to be a future powerful
alternative to the H.323 standard as the signalling system for the dominant
Voice over IP (VoIP) communications. This paper provides an in-depth analysis
of SIP by describing the SIP protocol stack, summarising the main features of
the protocol, and illustrating its architecture, message and operation. The
paper also explains the architecture and the two key aspects of signalling
interworking when SIP is interconnected with the PSTN.
Website: http://www.arjonline.org/engineering/american-research-journal-of-electronics-and-communication-engineering/
Website: http://www.arjonline.org/engineering/american-research-journal-of-electronics-and-communication-engineering/
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