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Method and apparatus for realizing calling switching in soft exchanging communication network

A technology of call transfer and communication network, which is applied in the field of communication and can solve problems such as limitations

Active Publication Date: 2010-05-12
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it only supports call transfer to SIP terminal users, and this call transfer is initiated by the terminal, not by the network
In the NGN network, SIP terminals are only a part, and many terminals do not support the SIP protocol, so this method is very limited

Method used

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  • Method and apparatus for realizing calling switching in soft exchanging communication network
  • Method and apparatus for realizing calling switching in soft exchanging communication network
  • Method and apparatus for realizing calling switching in soft exchanging communication network

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Experimental program
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Embodiment Construction

[0048] The network diagram of the softswitch communication network is as follows: figure 1 shown. The IAD equipment or AG equipment in each softswitch domain is connected to the softswitch system through the H.248 / MGCP protocol, and each software switch domain is connected to the application server through the SIP protocol.

[0049] At present, for softswitch users connected to the IAD device or AG device connected to the softswitch system through the H.248 / MGCP protocol, the call forwarding service in the ringing state cannot be realized.

[0050] One of the present invention provides a method for implementing call transfer in a softswitch communication network, such as figure 2 As shown in , the premise is that the calling user and the first called user are in a call.

[0051] In practical applications, large enterprises are often located in different geographical locations and often use the IP Centrex mode. The following uses the IP Centrex mode as an example. figure 2...

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PUM

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Abstract

This invention discloses one flexible exchange network method to realize call transfer, which comprises the following steps: flexible exchanger device sends first controller through application servoto the first exchanger controller to keep the first and second calls; the second flexible exchange controller sends message to main call flexible controller; main call exchange controller sends indication message to application servo with source address as main number with aim address as first call number and indication address as second called number; establishing connection between first and second called parts.

Description

technical field [0001] This field relates to a call transfer (Call Transfer) method in the communication field, and in particular to a call transfer method in a ringing state based on the SIP (Session Initiation Protocol, Session Initiation Protocol) protocol in a softswitch communication network. Background technique [0002] With the rapid development of communication technologies, NGN (Next Generation Network, Next Generation Network) networks and technologies, especially softswitch communication networks, have become an irresistible trend in the communication field. At the same time, various services based on the softswitch communication network have emerged as the times require, which is also a powerful weapon for many operators to fight against competitors. [0003] On a traditional PSTN network, if user A registers the call forwarding service, user A can use the service in the following ways: [0004] -User A calls user B, user B goes off-hook and talks with user A. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/58H04M3/428
Inventor 陈卫红刘志强陈寅秋汪云华
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD