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Method for realizing call

An implementation method and multi-party call technology, applied in the field of SIP, can solve the problems of difficult user service availability management, inconsistent operation methods, and multi-party calls have not been realized, and achieve the effect of good service management and controllability.

Inactive Publication Date: 2009-02-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method leads to the following defects: the operation mode of the user is inconsistent with the operation mode of the PSTN user; it is difficult to manage the service availability of the user because the service is triggered at the terminal; the call process requires close cooperation between the terminal and the network server, and any new The implementation of the service requires the upgrade support of the terminal and the network server; before triggering the service, the terminal must decide what service can be triggered according to the user's service attributes and call context details.
It is an inevitable trend to use SIP protocol in NGN to realize multi-party calls, but as mentioned above, most of the current supplementary services in NGN are implemented in terminal control mode, which has the above disadvantages; and for using network control mode, there is no Relevant standards for realizing supplementary services such as multi-party calls and conference TV

Method used

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Examples

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Embodiment Construction

[0040] This paper proposes a solution to provide flexible calls for SIP users in the NGN network, so as to realize flexible switching during user calls and calls between different users, as well as flexible multi-party calls. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0041] see first figure 1 The flow chart of establishing a multi-party call is described in detail for the present invention. In this example, the user of the SIP terminal A has the authority to initiate and manage the multi-party call service. After the SIP terminal A calls the SIP terminal B and enters the conversation state, the SIP terminal A The user calls the user of the SIP terminal C by flashing the hook, and initiates a multi-party call between the SIP terminals A, B, and C. The method for establishing a multi-party call includes the following steps:

[0042] Step 101: The user flashes the hook, and after the SIP terminal A dete...

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Abstract

The method comprises: after a first terminal builds a communication connection with a second terminal by using SIP protocol and a first soft switch device receives the SIP signaling triggered by flashing hook from the first terminal, the first terminal is hanged up, and through the SIP signaling informs the second soft switch device to hang up the second terminal; after receiving the number of the third terminal transmitted by the first terminal, the first soft switch device builds a connection with a the third switch device connected to the third terminal through the SIP signaling, and in the connection building process it send the service description protocol (SDP) used in multi-party call to the first terminal; with the connection built on the SDP used in multi-party call a session is made between the first terminal and the third terminal.

Description

technical field [0001] The invention relates to the technical field of SIP, in particular to a method for implementing a call. Background technique [0002] PSTN network is evolving to NGN network, and operators are gradually turning to NGN-based network solutions. Because it is easy to realize new value-added services and its openness and distribution, NGN has gradually become the new darling of many operators and has been listed as their investment plan. To provide various supplementary services (Supplementary Services) for NGN users has become the top priority of NGN network solutions. NGN is a unified general network solution, which includes IP-based users and network protocols (such as SIP, H.323, etc.). Among them, the SIP protocol has become one of the most widely used protocols due to its openness and simplicity. [0003] In the process of evolution to NGN, NGN must be able to provide users with all supplementary services similar to those provided by PSTN, and for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/56H04L29/06
Inventor 安爽
Owner HUAWEI TECH CO LTD
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