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Method, system and device for realizing call transfer

A technology for call forwarding and called users, which is applied in the direction of subscriber special services, etc., and can solve the problems of users who cannot realize call forwarding and network side equipment cannot directly manage PBX trunks

Active Publication Date: 2016-04-27
CHINA MOBILE GROUP JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using trunk access, the network side device cannot directly manage the users of the PBX trunk, so call transfer cannot be realized when the PBX trunk is unavailable

Method used

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  • Method, system and device for realizing call transfer
  • Method, system and device for realizing call transfer
  • Method, system and device for realizing call transfer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this embodiment, the network side device is an SS, and the application platform is another SS or another PBX relay. Such as image 3 It is the realization flow chart of embodiment 1, comprises the following steps:

[0035] Step 301: the calling user calls the called user under the SS, and sends an Identity and Access Management (IAM, Identity and Access Management) message to the SS, which includes the calling number and the called number; the SS discovers the PBX to which the called user belongs Relay is unavailable.

[0036] Step 302: The SS activates the backup route, transfers the call to other SS / other PBX trunks, and sends a Setup (Setup) message / Invite (Invite) message to other SS / other PBX trunks, which contains the calling number and the called number. call the number.

[0037] Step 303: Other SS / other PBX trunk initiates a new call to SS, and sends an Invite / Setup message to SS, and the message includes calling number, original called number, redirected ...

Embodiment 2

[0040] In this embodiment, the network side device is an SS, and the application platform is a new functional module of the SCP. Such as Figure 4 It is the realization flowchart of embodiment two, comprises the following steps:

[0041] Step 401: The calling user calls the called user under the SS, and sends an IAM message to the SS, the message includes the calling number and the called number; the SS finds that the PBX trunk to which the called user belongs is unavailable.

[0042] Step 402: The SS triggers the intelligent service to the functional module of the SCP, and sends an Internet Datagram Protocol (IDP, Internetwork Datagram Protocol) message to the functional module of the SCP. The message includes the calling number and the called number with a special prefix added.

[0043] Step 403: The functional module of the SCP initiates a new call, and sends a connect (Connect) message to the SS, and the message includes the calling number, the original called number, the...

Embodiment 3

[0047] In this embodiment, the network side device is an SS, the application platform is a new functional module of the SCP, and the SS does not have the SSP function. Such as Figure 5 It is the implementation flowchart of embodiment three, including the following steps:

[0048] Step 501: The calling user calls the called user under the SS, and sends an IAM message to the SS, the message includes the calling number and the called number; the SS finds that the PBX trunk to which the called user belongs is unavailable.

[0049] Step 502: The SS sends an IAM / Invite message to the SSP, which includes the calling number and the called number with a special prefix, instructing the SSP to trigger the intelligent service.

[0050] Step 503: The SSP triggers the intelligent service to the functional module of the SCP according to the special prefix, and sends an IDP message to the functional module of the SCP. The message includes the calling number and the called number added with ...

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PUM

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Abstract

The invention provides a method, system and device for realizing call forwarding. The method comprises the steps of: receiving a call of a calling subscriber to a called subscriber and judging whether a subscriber-level switchboard relay of the called subscriber is available or not, by network side equipment; and if the subscriber-level switchboard relay of the called subscriber is unavailable, forwarding the call to an application platform so as to make the application platform initiate a new call. According to the invention, the call continuation between the calling subscriber and the called subscriber can be realized under the condition that the subscriber-level switchboard relay is unavailable.

Description

technical field [0001] The present invention relates to the technical field of next generation network (NGN, NextGenerationNetwork), in particular to a method, system and device for realizing call transfer. Background technique [0002] A private branch exchange (PBX, PrivateBranchExchange) is a commonly used device in a group voice private line access solution, which can be in a trunk mode or a user mode. The main difference between the two is that the latter can realize the management of user data, such as the realization of supplementary services, the management of permissions, etc.; but this method needs to increase system consumption and the compatibility of protocol docking is not good enough, and there is no high business use Therefore, at present, relay access is generally used. A PBX that adopts the trunk mode is called a PBX trunk. [0003] When accessing through a trunk, the network-side device cannot directly manage the users of the PBX trunk, so call transfer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/54
Inventor 王华戴耀方
Owner CHINA MOBILE GROUP JIANGSU