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Call connection establishing method

A technology for establishing a method and calling a connection, which is applied in the field of communication and can solve problems such as no IWF data format definition

Inactive Publication Date: 2012-01-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current problem is that the existing codec does not define the IWF data format

Method used

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  • Call connection establishing method

Examples

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Embodiment Construction

[0016] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] refer to Figure 2A to Figure 2C , illustrating a method for establishing a call connection according to an embodiment of the present invention. Such as Figure 2A As shown, the method for establishing a call connection includes the following steps: S202, the interworking functional entity on the originating side initiates a call connection request to the mobile switching center emulation entity on the originating side, and carries a specific codec format; S204, the interworking function entity on the originating side The mobile switching center simulation entity responds to the request of the interworking functional entity on the originating side, and requests the media gateway on the originating side to establish an interworking function channel and / or perform codec format conversion according to a specific codec format;...

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Abstract

The invention discloses a call connection establishment method, which includes steps as following: S202, a mutual communication function body aside the start call sends out a call connection request to a mobile exchange center stimulation body aside the start call, along with special codec format; S204, the mobile exchange center stimulation body aside the start call responds to requests of the mutual communication function body aside the start call, to request a media gateway aside the start call to establish a mutual communication channel and (or) performs conversion according to the special codec format; S206, the mobile exchange center stimulation body aside the start call consults with the mobile exchange center stimulation body aside the end call, and the connection between the mutual communication function body aside the start call and the mutual communication function body aside the end call can be established by using the special codec format. Through the invention, the negotiation of the mutual commutation function body coding format between two mobile exchange center stimulation bodies can be realized.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for establishing a call connection. Background technique [0002] The Interworking Function (IWF for short) entity is to provide interworking between Code Division Multiple Access (CDMA for short) network and Public Switched Telephone Network (PSTN for short) or between CDMA data terminals functional device. It utilizes a mobile station (mobilestation, referred to as MS) and a modem (Modulator-Demodulator, referred to as MODEM) on the IWF to provide users with the same functions as the wired MODEM to realize circuit data services (for example, fax or asynchronous data, etc.). IWF may be in the game, it may be in the game. Inter-office refers to involving two mobile switching center emulation (mobileswitch center emulation, referred to as MSCE) entities, its structure is as follows figure 1 As shown, the session initiation protocol (Session Initiation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/18
Inventor 张强关先锋袁磊峰
Owner ZTE CORP
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