2What is the Session Initiation Protocol and how is it used? . portal7.info publications/nistpubs//portal7.info Page 7 of 9. PDF | Many styles of multimedia conferencing are likely to co-exist on The Session Initiation Protocol (SIP) is a simple protocol designed to. PDF | Session Initiation Protocol, SIP, provides controlplane signaling for the IP networks. SIP enables initiating, modifying and terminating.
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This chapter describes Session Initiation Protocol (SIP) and the interaction between SIP and SIP and Cisco Unified Communications Manager, page Session Initiation Protocol i. About this Tutorial. SIP is a signalling protocol designed to create, modify, and terminate a multimedia session over the Internet . IETF RFC – Replaces RFC • “The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol for creating.
Proxy servers can provide functions such as authentication, authorization, network access control, routing, reliable request retransmission, and security. Redirect Server—The redirect server provides the client with information about the next hop or hops that a message should take, and the client then contacts the next hop server or user agent server directly. Registrar Server—The registrar server processes requests from user agent clients for registration of their current location. Redirect or proxy servers often contain registrar servers. The UAS then responds on behalf of the user. Cisco Unified Communications Manager can act as both a server and a client a back-to-back user agent.
A single session may involve several clients and servers.
Identification of users in a SIP network works through: A unique phone or extension number. The user ID can comprise either a user name or an E.
Cisco Unified Communications Manager only supports E. An e-mail address format employee company.
SIP and Cisco Unified Communications Manager All protocols require that either a signaling interface trunk or a gateway be created to accept and originate calls. As is true for the H.
To provide redundancy, in the event of failure of one logical SIP interface, other logical SIP interfaces provide services in the same route group list. SIP trunks can simultaneously run on all nodes and Cisco Unified Communications Manager can randomly choose from any of the available SIP trunks that can reach a given node.
The system ensures that, over time and on average, all 16 nodes in the core cluster are used equally.
This practice prevents system resources on some nodes from remaining idle while other nodes handle an unsustainable call burden. But it should be noted that the job of SIP is limited to only the setup and control of sessions.
The details of the data exchange within a session e. For an overview of the major SIP functions, click here. This introduction is meant for beginners.
This beginners' made easy tutorial is to give a brief introduction to SIP before one ventures into the long RFC documents. However, if you are a veteran please go through this short tutorial and suggest modifications.
Here on this site the aim is not to make you an expert of SIP based applications. I doubt whether any site can do that.
You have to have hands on experience to muster the aspects related to Internet multimedia or IP telephony. Here I am proposing nothing new.