Session initiation protocol

A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. This makes possible to implement services like voice-enriched e-commerce, web page click-to-dial or Instant Messaging with buddy lists in an IP based environment. Don't worry if you don't know about these services.

Session initiation protocol

Introduction The purpose of Jingle is to enable one-to-one, peer-to-peer media sessions between XMPP entities, where the negotiation occurs over the XMPP signalling channel and the media is exchanged over a data channel that is usually a dedicated non-XMPP transport.

Session initiation protocol

Jingle is designed in a modular way: It is expected that most application types, transport methods, and security preconditions will be documented in specifications produced by the XMPP Standards Foundation XSF [ 14 ] or the Internet Engineering Task Force IETF [ 15 ]; however, developers can also define proprietary methods for custom functionality.

Although Jingle provides a general framework for session management, the original target application for Jingle was simple voice and video chat. Session initiation protocol stress the word "simple". The purpose of Jingle was not to build a full-fledged telephony application that supports call waiting, call forwarding, call transfer, hold music, IVR systems, find-me-follow-me functionality, conference calls, and the like.

These features are of interest to some Session initiation protocol populations, but adding support for them to the core Jingle layer would introduce unnecessary complexity into a technology that is designed for simple but generalized session negotiation. How It Works This section provides a friendly introduction to Jingle.

A simplified session flow would be as follows: After the responding client acknowledges receipt of the session-initiate message not shown hereit prompts the responding user if any to choose whether she wants to proceed with the session however, it does not need to prompt the user if for example she has configured her client to automatically accept session requests from this particular initiator.

If she wants to proceed she selects the appropriate interface element and her client sends a session-accept message to the initiator.

Eventually, one of the parties here the responder will terminate the session. If there is no error, the responder acknowledges the session initiation request. Requirements The protocol defined herein is designed to meet the following requirements: Make it possible to manage a wide variety of peer-to-peer sessions including but not limited to voice and video within XMPP.

When a peer-to-peer connection cannot be negotiated, make it possible to fall back to relayed communications.

IANA — Protocol Registries

Clearly separate the signalling channel XMPP from the data channel. Clearly separate the application format e. Make it possible to add, modify, and remove both application types and transport methods in an existing session. This document defines the signalling protocol only.

Additional documents specify the following: Various application formats audio, video, etc. Various methods of securing the transport before using it to send application data; the only method defined so far is Transport Layer Security as described in Jingle XTLS [ 19 ].

This is the 'what' of the session i. Component A numbered stream of data that needs to be transmitted between the endpoints for a given content type in the context of a given session. It is up to the transport to negotiate the details of each component.

Depending on the content type, multiple components might be needed e. Content Type A pair formed by the combination of one application format and one transport method. Session One or more content types negotiated between two entities. It is delimited in time by a session-initiate action and a session-terminate action.

During the lifetime of a session, content types can be added or removed. A session consists of at least one content type at a time. Transport Method The method for establishing data stream s between entities. This is the 'how' of the session.

Introduction to SIP (Session Initiation Protocol) A Made Easy Tutorial

The transport method defines how to transfer bits from one host to another. Each transport method MUST specify whether it is "datagram" or "streaming" as described in the Transport Types section of this document.

In diagrams, the following conventions are used: Jingle consists of three parts, each with its own syntax and semantics: Overall session management Application types the "what" Transport methods the "how" This document defines the semantics and syntax for overall session management.

It also provides pluggable "slots" for application formats and transport methods, which are specified in separate documents. At the most basic level, the process for initial negotiation of a Jingle session is as follows:This page contains the current lists of.

Internet Standards. Draft Standards [Note: This maturity level was retired by RFC "Any protocol or service that is currently at the abandoned Draft Standard maturity level will retain that classification, absent explicit actions."].

Session Initiation Protocol (SIP) is one of the most common protocols used in VoIP technology. It is an application layer protocol that works in conjunction with other application layer protocols to control multimedia communication sessions over .

SIP (Session Initiation Protocol) is a signaling protocol used to create, manage and terminate sessions in an IP based network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session.

Session Initiation Protocol is an application-layer control protocol that can establish, modify, and terminate multimedia sessions (conferences) such as Internet telephony calls using Voice over IP (VoIP). Session Traversal Utilities for NAT (STUN) is a standardized set of methods, including a network protocol, for traversal of network address translator (NAT) gateways in applications of real-time voice, video, messaging, and other interactive communications..

STUN is a tool used by other protocols, such as Interactive Connectivity Establishment (ICE), the Session Initiation Protocol (SIP), or. The Session Initiation Protocol (SIP) is an Internet Engineering Task Force (IETF) standard call control protocol, based on research at Columbia University by Henning Schulzrinne and his team.

SIP, Session Initiation Protocol