SIP stands for Session Initiation Protocol. It is an application layer protocol. SIP is for creating, modifying, and terminating sessions with one or more participants. These sessions include Internet telephone calls, instant messaging, multimedia conferences, and multimedia distribution.
Session Initiation Protocol (SIP)
FAQs, background materials and lists of current work in this field.
An open-source multimedia communication library written in C, implementing protocols such as SIP, SDP, RTP, STUN, TURN, and ICE.
PROTOS Test Suite
A test-suite to find vulnerabilities in protocol software.
Session Initiation Protocol (sip) (concluded WG)
Working group for protocol development. Links to RFCs and internet drafts.
SIP (Session Initiation Protocol) Introduction
An introductory tutorial talks about protocol functions, components, message types, how it works and where it is applied.
Information about SIP, technology around SIP, and SIP software products offered by Brekeke Software.
A membership based forum. Also contains a news board.
An international open source community providing VoIP solutions and technology based on the SIP standard.
Tools for auditing SIP devices: sip scanner listing SIP devices found on an IP range, online password cracker for SIP PBX.
Provides a software development environment.
Understanding SIP exchanges by experimentation
The path of SIP signaling, SIP messages, transactions, and dialogs