Glossary

What is SIP (Session Initiation Protocol)?

A signalling protocol for initiating and managing voice and video calls.

Definition

Session Initiation Protocol (SIP) is a signalling protocol used for initiating, maintaining, and terminating real-time voice, video, and messaging sessions over IP networks. It is the foundation of most modern VoIP systems.

How it works

SIP handles call setup (INVITE), modification (re-INVITE), and teardown (BYE). It works with codecs for audio compression and RTP for media transport. SIP is used by PBX systems, softphones, and cloud telephony providers.

In Lodgestory

Lodgestory's voice integrations use SIP for call routing through telephony partners, supporting features like IVR, call recording, and real-time analytics.

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