What Is Session
Initiation Protocol?

Information About Technology

Core Definition

The Session Initiation Protocol (SIP) is a signaling protocol that serves as the backbone of modern internet-based communication. It is responsible for establishing, modifying, and terminating multimedia sessions like voice calls, video conferencing, and instant messaging over IP networks.

Benefit Definition

SIP offers flexibility and scalability in internet-based communication. It enables a wide range of features including caller ID, call forwarding, presence management, and integration with other applications. SIP is a significant reason why VoIP solutions have become so popular and versatile.

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Technical Definition

SIP functions by exchanging text-based messages between endpoints (like phones or servers) to manage call setup, termination, and negotiation of media types. It often works alongside the Session Description Protocol (SDP) to describe the specific parameters of a multimedia session. SIP’s standardized and open nature has led to its widespread adoption in VoIP systems.

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