Processing method for videophone call receding and processing system for same

A technology of videophone and processing method, applied in the direction of transmission system, electrical components, etc., can solve problems such as billing, and achieve the effect of avoiding billing problems

CN102523222AActive Publication Date: 2012-06-27CHINA UNITED NETWORK COMM GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-06-27

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Abstract

The invention provides a processing method for videophone call receding and a processing system for the same. The method includes the steps of after a called terminal of a CS (circuit switched) domain receives a video call request initiated by a calling terminal of an IMS (IP multimedia subsystem) domain and selects audio answering, sending release information to a VIG (video interworking gateway), wherein the release information carries reason codes to indicate that the called terminal selects audio answering; sending error messages to an AS (application server) on the side of the IMS after the VIG receives the release information; and initiating audio media negotiation and resetting up audio call after the AS on the side of the IMS receives the error messages. The processing method can avoid the charging problem due to videophone call receding.
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Description

technical field

[0001] The invention relates to the technical field of mobile communication, in particular to a method and system for processing videophone fallback. Background technique

[0002] In the prior art, an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) domain and a Circuit Switched (Circuit Switched, CS) domain can communicate with each other. Users in the IMS domain can make video calls to users in the CS domain. When the users in the CS domain choose to answer the call via video, the two can make video calls. If the CS domain user does not choose video answering but chooses audio answering, in the current protocol, the IMS domain user can re-initiate the second media negotiation for audio. For terminals that do not support update (update), during media negotiation for audio, the application server (Application Server, AS) on the calling side needs to return a 200OK message to the calling terminal, so that the calling terminal can re-initiate after recei...

Examples

Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] figure 1 It is a schematic flow diagram of the method of the first embodiment of the present invention, including:

[0022] Step 11: After receiving the video call request initiated by the calling terminal in the IMS domain and selecting an audio session, the called terminal in the CS domain sends a release message to the VIG. The rel...