## Overview Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating real-time communication sessions. These sessions can include voice and video applications over the Internet. SIP is fundamental to modern Voice over IP (VoIP) communications and enables features such as: - Voice and video calls - Conference calling - Presence information - Multimedia distribution Getting started with SIP involves understanding a few key components: - SIP endpoints (phones, softphones, or applications) - SIP servers (proxies, registrars) - Network requirements To get started with SIP on SignalWire, click on the below links to learn more about SIP.