SIP
Session Initiation Protocol
Application Layer — VoIP & Streaming
Protocol Overview
Full Name
Session Initiation Protocol
Abbreviation
SIP
OSI Layer
Application Layer
Category
VoIP & Streaming
Default Port
5060, 5061
RFC
RFC 3261
About SIP
Signaling protocol for initiating, maintaining, and terminating real-time voice, video, and messaging sessions over IP.
Application Layer
VoIP & Streaming
Port 5060, 5061
Standards Reference
SIP is defined in RFC 3261, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.