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Method for implementing call switching service

A technology of call transfer and implementation method, applied in the field of communication, to achieve the effect of perfecting business types

Inactive Publication Date: 2011-08-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no method in the prior art that can realize the function of hiding the number of the third-party user in the call forwarding service from the calling user in the call forwarding service

Method used

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  • Method for implementing call switching service
  • Method for implementing call switching service
  • Method for implementing call switching service

Examples

Experimental program
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Effect test

Embodiment Construction

[0056] The specific embodiment of the present invention is described below in conjunction with accompanying drawing:

[0057] Such as image 3 As shown, taking UE-A and UE-B in a call state, UE-B transfers the call with UE-A to UE-C as an example to illustrate the method of the present invention, wherein SE-A ​​is UE-A AS-B is an application server of UE-B, and AS-C is an application server of UE-C.

[0058] For simplicity, in image 3 The CSCFs of UE-B and UE-C and related forwarding procedures involving CSCFs of UE-B and UE-C are omitted in . At the same time, the P-CSCF and I-CSCF of UE-A and related forwarding procedures involving P-CSCF and I-CSCF of UE-A are omitted, and the SE of UE-A is reserved, and the SE of UE-A includes UE- A's AS and UE-A's S-CSCF. As mentioned above, in the following description, the relevant forwarding process of the entities omitted in the figure has been omitted, and the actual transmission process of the message is as follows figure 1 As...

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Abstract

The invention discloses a method for realizing a call transferring service. Particularly, after receiving an invitation response message which is sent by an application server a third party user of the call transferring service to a reception side of the call transferring service, an application server deletes number information of the third party user carried in the invitation response message, or instructs other application servers which transfer the invitation response message to delete the number information of the third party user carried in the invitation response message. The inventionprocesses to screen the number of the third party user carried in the invitation response message which is returned to the reception side by the third party user in the call transferring service via AS, hiding the number information of the third party user for all or certain specifically reception sides in the call transferring service so as to reach the request that the user processes to keep secret for the number of the third party user in the call transferring service and provide a more perfect type of service for operators.

Description

technical field [0001] The present invention relates to the communication field, and in particular to a method for implementing a call forwarding service by hiding the number information of a third-party user in a next generation network (Next Generation Network, NGN for short). Background technique [0002] In the NGN network with Internet Protocol (IP for short) Multimedia Core Network Subsystem (IMS for short) as the core, Session Initiation Protocol (SIP for short) is used as the service control protocol. In the IMS system, the control layer and the service layer are separated. The control layer does not provide specific services, but is only responsible for providing the necessary control functions such as triggering, routing, and charging to the service layer. The control function of the control layer is implemented by a call session control function (Call Session Control Function, CSCF for short). [0003] The CSCF is divided into the Proxy Call Session Control Funct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/54H04M7/00
Inventor 刘熠雯沈岷谢振华
Owner ZTE CORP
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