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.
In Depth
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.
Lodgestory's voice integrations use SIP for call routing through telephony partners, supporting features like IVR, call recording, and real-time analytics.
Related Terms
IVR (Interactive Voice Response)
An automated phone system that routes callers using voice or keypad input.
PSTN (Public Switched Telephone Network)
The traditional circuit-switched telephone network.
SIP Trunking
A service that connects a business phone system to the PSTN via the internet.
WebRTC
A browser technology enabling real-time voice and video without plugins.
See it in action
Learn how Lodgestory implements this concept in the Voice & IVR feature.
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