Question

Illustrate the Session Initiation Protocol (SIP) for VoIP in your own words with appropriate diagram.

Answer 1

Session Initiation Protocol (Taste) is one of the foremost common conventions utilized in VoIP innovation. It is an application layer convention that works in conjunction with other application layer conventions to control interactive media communication sessions over the Web.

The Session Initiation Protocol (Sip) may be a signaling convention utilized for starting, keeping up, and ending real-time sessions that incorporate voice, video and informing applications.

The convention characterizes the particular arrange of messages traded and the arrangement of communications for participation of the members. Taste could be a text-based convention, consolidating numerous components of the Hypertext Exchange Convention (HTTP) and the Basic Mail Exchange Convention (SMTP). A call built up with Taste may comprise of numerous media streams, but no isolated streams are required for applications, such as text messaging, that trade information as payload within the Taste message.

Sip works in conjunction with a few other conventions that indicate and carry the session media. Most commonly, media sort and parameter arrangement and media setup are performed with the Session Depiction Convention (SDP), which is carried as payload in Taste messages. Taste is outlined to be autonomous of the fundamental transport layer convention, and can be utilized with the Client Datagram Convention (UDP), the Transmission Control Convention (TCP), and the Stream Control Transmission Convention (SCTP). For secure transmissions of Taste messages over unreliable organize joins, the convention may be scrambled with Transport Layer Security (TLS). For the transmission of media streams (voice, video) the SDP payload carried in Taste messages regularly utilizes the Real-time Transport Convention (RTP) or the Secure Real-time Transport Convention (SRTP).

Sip characterizes a exchange component to control the trades between members and convey messages dependably. A exchange may be a state of a session, which is controlled by different clocks. Client exchanges send demands and server exchanges react to those demands with one or more reactions. The reactions may include provisional reactions with a reaction code within the shape 1xx, and one or different last reactions (2xx – 6xx)