By Radhika Ranjan Roy
Session Initiation Protocol (SIP), standardized via the net Engineering job strength (IETF), has emulated the simplicity of the protocol structure of hypertext move protocol (HTTP) and is being popularized for VoIP over the web a result of ease with which it may be meshed with internet companies. even if, it's tricky to grasp precisely what number requests for reviews (RFCs) were released over the past 20 years with regard to SIP or how these RFCs are interrelated.
Handbook on consultation Initiation Protocol: Networked Multimedia Communications for IP Telephony
solves that challenge. it's the first booklet to place jointly all SIP-related RFCs, with their obligatory and non-compulsory texts, in a chronological and systematic means in order that it may be used as a unmarried super-SIP RFC with a virtually one-to-one integrity from starting to finish, permitting you to determine the large photograph of SIP for the fundamental SIP functionalities. it's a booklet that community designers, software program builders, product brands, implementers, interoperability testers, execs, professors, and researchers will locate to be very useful.
The textual content of every RFC from the IETF has been reviewed via all contributors of a given operating crew made from world-renowned specialists, and a coarse consensus made on which elements of the drafts have to be necessary and not obligatory, together with no matter if an RFC has to be criteria music, Informational, or Experimental. Texts, ABNF syntaxes, figures, tables, and references are incorporated of their unique shape. All RFCs, in addition to their authors, are supplied as references. The publication is equipped into twenty chapters in line with the main functionalities, beneficial properties, and services of SIP.
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Extra resources for Handbook on session initiation protocol : networked multimedia communications for IP telephony
Session refresh request An INVITE or UPDATE request processed according to the rules of this specification. If the request generates a 2xx response, the session expiration is increased to the current time plus the session interval obtained from the response. A session refresh request is not to be confused with a target refresh request defined in 3261 (see below, this table), which is a request that can update the remote target of a dialog (RFC 4028: Standards Track). 849 (RFC 6910: Standards Track).
This is also known as connection reuse (RFC 5923: Standards Track). Answer An SDP message sent by an answerer in response to an offer received from an offerer (RFC 3264: Standards Track). Answerer An agent that receives a session description from another agent describing aspects of desired media communication, and then responds to that with its own session description. Appearance number A positive integer associated with one or more dialogs of an AOR. Appearance numbers are managed by an appearance agent, and displayed and rendered to the user by UAs that support this specification.
1 (Continued) Terminologies and Their Definitions Terminology Definition Completion of Call (CC) request The entry in the callee’s monitor queue representing the caller’s request for CC processing, that is, the caller’s CC subscription (RFC 6910: Standards Track). CC service duration timer: maximum time a CC request may remain active within the network (RFC 6910: Standards Track). Completion of Calls (CC) A service that allows a caller who failed to reach a desired callee to be notified when the callee becomes available to receive a call (RFC 6910: Standards Track).