Domain switch method in continuous voice call service

A voice call and continuity technology, applied in the field of communication, can solve the problems of multi-number resources and occupancy, and achieve the effect of solving the problem of occupying many number resources

Inactive Publication Date: 2008-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the VDN is always occupied during the session, the method of dynamically allocating the VDN will occupy more number resources. For example, a maximum of 10,000 sessions exist in a VCC application at the same time, so at least 10,000 numbers must be allocated to the VCC application.
However, a technical solution that can solve the problem that the dynamic allocation method occupies more number resources has not yet been proposed

Method used

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  • Domain switch method in continuous voice call service
  • Domain switch method in continuous voice call service
  • Domain switch method in continuous voice call service

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Embodiment Construction

[0051] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0052] In an embodiment of the present invention, a domain switching method in a voice call continuity service is provided.

[0053] Such as image 3 As shown, the domain switching method in the voice call continuity service according to the embodiment of the present invention includes the following steps: Step S302, the VCC application acquires a VDN from a preset VDN set and assigns it to an IMS session, wherein the VCC user is in an active IMS session In step S304, the VCC user uses the assigned VDN as the called number to initiate a voice call from the CS domain, and requests to switch the IMS session to the CS domain, wherein the calling number in the call setup request message used to initiate the voice call is request The phone number of the switched user; step S306, in response to the switching request, VMSC triggers the CAMEL service calling process, and...

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Abstract

The invention discloses a domain switching method in a voice call continuous service, which comprises the following steps: a VCC application obtains a VDN from a presetting VDN set to distribute the VDN to an IMS dialogue and VCC users are in the active IMS dialogue; VCC users apply the distributed VDN as a called number to make a voice call from a CS domain, requesting the switching of the IMS dialogue to the CS domain, and a call used for making the voice call builds a calling number in request message as the number of users asking for switching; a VMSC triggers a CAMEL service calling process and sends the calling number in the switching request and the VDN to the VCC application; the VCC application determines the IMS dialogue to be switched according to the calling number and the VDN, and distributes corresponding DTF PSI and sends back to the VMSC; the VMSC uses the DTF PSI as the called number and sends a dialogue establishment request to the VCC application; the VCC application determines the IMS dialogue to be switched according to the DTF PSI.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a domain switching method in voice call continuity service. Background technique [0002] The IP Multimedia Core Network Subsystem (IMS) technology can be used to realize real-time voice transmission on the packet network, and provide services similar to Circuit Switched Domain (CS) voice services. Combining this service with the traditional circuit domain voice service can provide users with fixed-mobile convergence services to meet the increasing communication needs of users. [0003] For example, in office areas, hotspots, and homes where wireless local area network (Wireless Local Area Network, WLAN) technology has been widely used, users use support circuit domain (for example, Global System for Mobile Communications (Global System for Mobile Communications, GSM)) and WLAN Dual-mode or multi-mode user terminal equipment with access mode; in areas covered by WL...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/64H04L12/28H04Q7/38H04Q7/22H04L47/2466
Inventor 郝振武
Owner ZTE CORP
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