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Method of DTMF signalling intercommunication between network with separated bearing and controlling and public switching network

A technology of separating network and carrying control, applied in the field of signal intercommunication between network and PSTN, it can solve the problems of occupying network resources and high network cost, saving network resources, improving resource utilization efficiency, and reducing demand.

Inactive Publication Date: 2004-11-10
ZTE CORP
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the prior art that a large number of network resources are occupied and the network cost is high because each call channel is configured with a DTMF recognizer, in order to provide a method that enables the separation of bearer control at low cost. NGN network reliably receives DTMF signal method originating from PSTN

Method used

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  • Method of DTMF signalling intercommunication between network with separated bearing and controlling and public switching network
  • Method of DTMF signalling intercommunication between network with separated bearing and controlling and public switching network
  • Method of DTMF signalling intercommunication between network with separated bearing and controlling and public switching network

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0029] During a call, sometimes it is necessary to prompt the calling user to dial in more numbers and provide additional information about business needs. For example, a user using 300 may be required to input account, password and called number. At this time, see Figure 5 , the SN sends an APM message to the predecessor node GSN through BICC signaling, which includes an action indicator set to "start DTMF detection (start DTMF detection)". At the same time, SN uses the Play Announcement program to request BIWF2 to send prompts to PSTN users to notify users of relevant information, and uses the Detect DTMF program to request BIWF2 to detect DTMF signals. After receiving the APM message, GSN uses the startDTMF detection program to request BIWF1 to detect and convert DTMF signals. BIWF1 occupies an idle DTMF recognizer, and the DTMF digits entered b...

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Abstract

The invention discloses a method of DTMF signaling interflow between supporting and separation control network and PSTN network, including: 1, extending the coding of action instruction signal field in ITU-TQ.765.5 standard; 2, when SN need collect user input information, firstly send APM information to a front node through BICC signaling, require the call user to input information and convert it into digital signal by to transmit to SN; 3, SN justifies it receives enough information, then sends instruction to stop receiving information, and terminates receiving course and releases DTMF identifier resources. It largely reduces demands on DTMF identifier, saves network resources, and enhances resources utilization ratio.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for signal intercommunication between a network separated from bearer control and a PSTN (Public Switched Telephone Network, public switching network). Background technique [0002] With the rapid development of social economy, people rely more and more on the communication system, the communication system is also continuously developed with the increasingly diverse needs of people, and the technical level is continuously improved. The current communication network is changing from a single PSTN network Evolving to an NGN (Next Generation Network, Next Generation Network) network in which the transport layer, control layer, and service layer are separated. ITU-T (International Telecommunication Union-Standardization Sector) has developed BICC (Bearer Independent Call Control, bearer independent call control) signaling protocol for NGN. The BICC signaling protocol is a NNI (Net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/46
Inventor 吴卫兵周宇翔范浩捷
Owner ZTE CORP
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