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Inquiry transferring method used for VPN

A transfer and transfer system technology, applied in hybrid switch systems, digital transmission systems, electrical components, etc., to achieve the effect of rich functions

Active Publication Date: 2009-12-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no call query transfer method based on the broadband SIP protocol that can be used for VPN to transfer the call to another user

Method used

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  • Inquiry transferring method used for VPN
  • Inquiry transferring method used for VPN
  • Inquiry transferring method used for VPN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention is realized through AS (Application Server, application server). The AS provides VPN business logic, which converts the user short number to long number, associates transmission of Refer and its response in the conversation, Notify and its response, etc. A user needs to sign up for a VPN service on the S-CSCF (Serving-CallSession Control Function, serving CSCF), and a user who needs to be transferred also needs to sign up for a call forwarding service on the PSS (PSTN / ISDN Simulation Services).

[0017] First, VPN user A calls VPN user B. The S-CSCF of the calling network triggers the call of A to the AS of the calling network. If A dials the short number of B, the AS of the calling network searches the database to obtain the long number of B; The AS using B's long number initiates a call to user B, and the call is routed to the S-CSCF of the called network. Since user B also subscribes to the VPN service, the S-CSCF of the called network triggers...

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Abstract

In order to realize a calling inquiry transferring method used for VPN based on a broadband SIP protocol, the invention provides a calling inquiry transferring method used for a broadband simulated special network VPN. The method comprises the following steps that: a first user initiates transferring Refer request to an application server of a first network; the application server of the first network processes the Refer and response thereof, Notify and response thereof; an application server of a second network where a second user is positioned transmits media information of a third user to the second user; the media information of the second user is transmitted to the third user; and communication is established between the second user and the third user. In addition, the invention alsoprovides a calling inquiry transferring system used for the broadband VPN. Through the method and the system, the communication transfer of the third party is realized in a mode that the user can initiate the Refer request on the broadband VPN based on the SIP protocol.

Description

technical field [0001] The present invention relates to a kind of inquiry transfer method, specifically, relate to in IMS (IPMultimedia System, IP Multimedia System) network, based on the AS (Application Server, application server) of SIP (SessionInitialization Protocol, Session Initiation Protocol) protocol, it is used for VPN (Virtual Private Network, virtual private network) query transfer method. Background technique [0002] With the development of social economy and the expansion of enterprise scale, convenient communication between enterprises or groups is very important, especially for cross-regional groups. VPN service is a service for group users. It assigns a short number to each member of the group. Each short number corresponds to the actual communication number (long number) of each member. Members within the group call each other through the short number and Enjoy preferential tariffs, which greatly facilitates the communication between group users. Current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12
CPCH04L65/1006H04L12/6418H04L65/1096H04L12/4679H04L29/06312H04L29/06326H04L65/1063H04L29/06197H04L65/1069H04L29/0638H04L65/1104
Inventor 梅君君韩银俊罗会平郭斌
Owner ZTE CORP
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