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A call-back method and system in busy circumstances

A technology of busy and called terminals, applied in the field of communication, can solve the problems of increasing the load of the local exchange, affecting the inter-office signaling and the processing efficiency of the exchange of the other office, and the PSTN exchange being unable to process the user's wish information, so as to make full use of network resources. , the effect of reducing information interaction and improving popularization ability

Active Publication Date: 2012-02-29
CHINA MOBILE COMM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing not only increases the load of the local switch, but also affects the processing efficiency of inter-office signaling and peer switches.
[0007] (3) The PSTN switch cannot process the user's wish information. When the called user's network status is idle, if the user does not want to accept the call at this time, the user cannot send his wish to the switch
[0011] (2) This solution requires user terminals to have subscription and notification functions, which affects the popularity of CCBS services
[0012] (3) The application server cannot obtain the communication willing information of the user terminal. When the network status of the called terminal is idle, if the called user does not want to accept the call at this time, the user cannot send his willingness to the application server

Method used

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  • A call-back method and system in busy circumstances
  • A call-back method and system in busy circumstances
  • A call-back method and system in busy circumstances

Examples

Experimental program
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Embodiment 1

[0026] figure 1 It is a flow chart of Embodiment 1 of the busy callback method of the present invention, including the following steps:

[0027] Step A: After the application server (Application Server, referred to as AS) receives the call back request when the calling terminal is busy and judges that the request is legal, the application server sends a subscription to the status of the called terminal to the presence server (Presence Server, referred to as PS) request message.

[0028] Step B, the presence server learns that the called terminal is idle according to the reported called terminal status information and notifies the application server.

[0029] In step C, the application server initiates a call invitation to the calling terminal and the called terminal after learning that the called terminal is idle.

[0030] Step A, step B and step C reflect the call back process in case of busyness, and this embodiment also includes step D, establishing communication between ...

Embodiment 3

[0039] In embodiment three, step A includes, such as Figure 4 Shown:

[0040] Step A1: After receiving the busy callback request from the calling terminal and judging that it is legal, the calling application server sends a subscription request message for the status of the called terminal to the called application server. First, the calling terminal calls the called terminal, and the called application server judges whether the call queue of the called terminal waiting for the CCBS reaches the maximum number (up to 5 for each terminal). If the maximum number is not reached, the called application server returns to the calling The queue of the called terminal waiting for CCBS described by the application server has not reached the maximum number, and the calling application server allows the calling terminal to activate the CCBS service; after receiving the activation of the CCBS service by the calling terminal, the calling application server saves the relevant information of...

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Abstract

The invention relates to a method of calling back on busy, which comprises that after an application server receives request of calling back on busy of a calling terminal and judges that the request is legal, a subscription request message of the state of a called terminal is sent to a presence server; the presence server learns that the called terminal is disengaged according to the reported state information of the called terminal and notifies the application server; then the application server originates call invitation to the calling terminal and the called terminal to realize calling back on busy. The invention further relates to a system of calling back on busy, which comprises a core network of an IP multimedia subsystem scope; the core network is further provided with a presence server that notifies the application server after learning that the called terminal is disengaged; the application server respectively originates call invitation to the calling terminal and the called terminal. The invention proposes a CCBS implement proposal based on a PS that effectively manages the communication state of the users in whole network, so as to make full use of network resources andpromote service ability.

Description

technical field [0001] The invention relates to a method and system for calling back in case of busyness in the communication field. Background technique [0002] The Completion of Call to Busy Subscriber (CCBS for short) service can improve the connection rate of network sessions, bring new value-added services to operators, and at the same time bring convenience to final consumers and provide better communication experience. [0003] Public Switched Telephone Networks (PSTN for short) can provide CCBS services for local office users, and complete the busy callback function between the local office calling and called users. PSTN provides the CCBS service process as follows: the calling terminal subscribes the CCBS service authority, the calling terminal calls the called terminal, when the called terminal is busy, the calling terminal listens to the busy tone, activates the CCBS service, and hangs up after the activation is successful. After receiving the activation operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/48H04M3/50
Inventor 杜倩魏冰王晓云袁小海任宜军
Owner CHINA MOBILE COMM GRP CO LTD
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