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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: 2013-06-05
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

[0023] The present invention is realized by AS (Application Server, application server). The AS provides VPN business logic, and performs the conversion of user short numbers to long numbers, the associated transmission of Refer and its responses in the dialog, and Notify and its responses. The user needs to subscribe the VPN service on the S-CSCF (Serving-Call Session Control Function, serving CSCF), and the user who needs to perform the transfer also subscribes the call transfer service on the PSS (PSTN / ISDN Simulation Services).

[0024] First, VPN user A dials VPN user B. The S-CSCF of the calling network triggers A's call to the AS of the calling network. If A dials the short number of B, the AS of the calling network queries the database to obtain the long number of B; The AS uses B's long number to initiate 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 trig...

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PUM

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Abstract

The present invention provides a call query refer method and a call query refer system for the virtual private network (VPN). The method comprises the following steps: initiating, by a first user, a refer request (Refer) to an application server of a first network where the first user is located (S102); transmitting media information of a third user to a second user through an application server of a second network where the second user is located in response to the refer request (S104); transmitting media information of the second user to the third user (S106); and establishing a call between the second user and the third user (S108). By the virtue of the present invention, a user can realize referring a call to a third party in the mode of initiating a refer request (Refer) in the broadband VPN based on SIP protocol. The present invention enriches the functions of the VPN service, and improves user experience.

Description

technical field [0001] The present invention relates to a query transfer method, in particular to an IMS (IP Multimedia System, IP Multimedia System) network, an AS (Application Server, application server) based on a SIP (Session Initialization Protocol, Session Initialization Protocol) protocol is implemented for A query transfer method of a VPN (Virtual Private Network). 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. The VPN service is a service for group users. It assigns a short number to each member in the group. Each short number corresponds to the actual communication number (ie long number) of each member. The members of the group call each other through the short number and communicate with each other. Enjoy preferential tariffs, which greatly facilitates the communication between group users. ...

Claims

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Application Information

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Patent Type & Authority Patents(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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