SIP Protocol Overview¶

Introduction¶

Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating real-time sessions that include voice, video, and messaging applications. This documentation covers TelcoAPI's implementation of SIP functionality.

Features¶

Session establishment and management
User registration and authentication
Presence and availability services
Instant messaging integration
Voice and video call handling
NAT traversal solutions

Protocol Components¶

User Agents (UA)
Proxy Servers
Registrar Servers
Redirect Servers
Location Servers

Message Types¶

REGISTER
INVITE
ACK
BYE
CANCEL
OPTIONS
MESSAGE

For implementation examples, see the Examples section.