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Method and device for controlling local session initiation protocol (SIP) calling

A regional and regional network technology, applied in the field of communication, can solve the problems of paralysis and low cost performance, and achieve the effect of low cost and simple technology implementation.

Active Publication Date: 2015-06-17
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to geographical characteristics, once the network connection between areas 1 and 2 and the central domain is interrupted, all IP voice services in areas 1 and 2 will be immediately paralyzed
[0004] As shown in Figure 2, although the operator and the SIP voice service provider can set up two additional backup SIP servers 2, 3 in areas 1, 2 respectively, when the network connection between areas 1, 2 and the central domain is interrupted To maintain the continuity of SIP calls within the region, but this solution requires additional costs and server maintenance, and the cost performance is not high

Method used

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  • Method and device for controlling local session initiation protocol (SIP) calling
  • Method and device for controlling local session initiation protocol (SIP) calling
  • Method and device for controlling local session initiation protocol (SIP) calling

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as image 3 The schematic diagram example of the network structure of the present invention includes three networks located in different areas, wherein area 0 is used as the central station, and the main and backup SIP servers are arranged to control call control and call between SIP gateways in each area. Routing, user registration and authentication management; area 0, 1, 2 networks can be a layer 2 switching network, in which SIP gateways 1, 2, 3, 4, 5 can provide standard analog telephones for POTS (analog telephone service) terminals Line interface, support for a variety of popular voice codecs, and other network functions. Each SIP gateway can maintain the connection with the primary and backup SIP servers by sending REGIST (registration) messages or OPTION (option) messages periodically; after the calling user picks up...

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PUM

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Abstract

The invention provides a SIP call control method and device in the local area. The network equipment in the area detects whether the SIP server is available. When the SIP server is unavailable, the calling user's INVITE (request) message is broadcast within the local network. And control the SIP call establishment according to the corresponding response message received. The network device can forward the INVITE message to the corresponding VLAN (Virtual Local Area Network), and the SIP network device can be a SIP gateway, a SIP user agent, or a SIP terminal, etc. In this way, when the SIP server is unavailable, a certain SIP local area calling function can be maintained within the local network.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a local area SIP call control method and device thereof. Background technique [0002] Voice over IP, as an efficient and low-cost means of communication, is being favored by more and more enterprise users all over the world. The existing commonly used VoIP solutions based on SIP (Session Initiation Protocol) are all based on the client-server (Client-Server) architecture, and the voice devices of each branch structure use a SIP server located at a central point to complete call control, Call routing, user management and other functions. [0003] Usually, in order to ensure that the communication can go on normally when a SIP server (we call it "primary SIP server") fails, a backup SIP server is set to take over the primary SIP server, such as figure 1 As shown, the main SIP server and the backup SIP server are generally one-to-one. When the main SIP server was wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/18H04L12/26
Inventor 肖钰
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD