What is SIP?
Session Initiation Protocol. This protocol is used for initiating, maintaining and terminating communication sessions. This protocol is widely used in IP telephony.
SIP stands for Session Initiation Protocol, which is a communication protocol used for initiating, modifying, and terminating multimedia sessions over IP networks. In simple terms, SIP is a signaling protocol that enables real-time communication over the internet by establishing, managing, and ending multimedia sessions such as voice and video calls, instant messaging, and online meetings.
SIP is an important protocol for Voice over IP (VoIP) services which allows users to make voice and video calls over the internet instead of using traditional phone lines. It is an application layer protocol that typically uses the User Datagram Protocol (UDP) or the Transmission Control Protocol (TCP) for transport.
SIP is a text-based protocol which uses request-response transactions and can operate in both client-server and peer-to-peer architectures. It uses a standardized set of methods or commands to initiate, modify, and terminate a session, including INVITE, ACK, BYE, OPTIONS, REGISTER, and CANCEL.
In summary, SIP is a communication protocol that enables real-time multimedia sessions over IP networks and is widely used for voice and video calls, instant messaging, and online meetings.