WO2009079960A1 - Procédé, système et équipement pour un interfonctionnement de signalisation dtmf hors bande - Google Patents

Procédé, système et équipement pour un interfonctionnement de signalisation dtmf hors bande Download PDF

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Publication number
WO2009079960A1
WO2009079960A1 PCT/CN2008/073646 CN2008073646W WO2009079960A1 WO 2009079960 A1 WO2009079960 A1 WO 2009079960A1 CN 2008073646 W CN2008073646 W CN 2008073646W WO 2009079960 A1 WO2009079960 A1 WO 2009079960A1
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Prior art keywords
signaling
party
dtmf
mgc
sip
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PCT/CN2008/073646
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English (en)
Chinese (zh)
Inventor
Muqiang Xia
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Huawei Technologies Co., Ltd.
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Publication of WO2009079960A1 publication Critical patent/WO2009079960A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1295—Details of dual tone multiple frequency signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1096—Supplementary features, e.g. call forwarding or call holding

Definitions

  • Embodiments of the present invention relate to the field of telecommunication communications technologies, and in particular, to an outband DTMF signaling interworking method, system, and apparatus. Background technique
  • DTMF Dual Tone Multi-Frequency signaling
  • VoIP Voice over IP
  • the DTMF signal consists of a superposition of audio signals of two frequencies.
  • the frequency of these two audio signals comes from two sets of pre-assigned frequency groups: the line frequency group or the column frequency group. Each pair of such audio signals uniquely represents a number or symbol.
  • the DTMF signal is generated by superimposing two sine waves of different frequencies to form a waveform.
  • the improved Goertzel algorithm is used to search for the existence of two sine waves from the frequency domain.
  • IP Internet Protocol
  • DTMF Voice over IP
  • the DTMF signal is used to express the DTMF signal in plain text by using the INFO method of SIP signaling, but does not define how to interwork with the BICC (Bearer Independent Call Control Protocol) and the mobile protocol.
  • in-band DTMF mode is applicable to TDM (Time Division Multiplex) bearers, and voice codec (such as G.711 encoding) that supports DTMF transmission under IP bearer; RFC2833/RFC4733 codec transmission mode is suitable for supporting RFC2833 capability negotiation control protocol, such as SIP; Out-of-band DTMF mode is applicable to control signaling protocols that can support signaling DTMF, such as mobile signaling, BICC, SIP.
  • the problem to be solved by the present invention is to provide a method and apparatus for performing out-of-band DTMF transmission through SIP INFO signaling, and implementing inter-band DTMF interworking with other signaling such as BICC and mobile signaling, thereby avoiding signal loss and ensuring DTMF signal. Reliable transmission.
  • An embodiment of the present invention provides an outband dual-tone multi-frequency DTMF signaling interworking method, which implements inter-band DTMF signaling interworking between a first party and a second party, and one of the first party and the second party adopts Initial session protocol SIP signaling, the first party and the other party in the second party adopt non-SIP signaling, and the method includes the following steps:
  • the media gateway controller MGC receives the out-of-band DTMF signaling of the first party; the MGC performs the out-of-band DTMF signaling of the first party according to the out-of-band DTMF signaling protocol supported by the second party. Format conversion
  • Embodiments of the present invention also provide a computer program product, the computer program product comprising computer program code, when the computer program code is executed by a computer
  • the computer program code can cause the computer to perform the steps described above.
  • the embodiment of the present invention further provides a computer readable storage medium, the computer storage medium comprising computer program code, when the computer program code is executed by a computer, the computer program code may cause the computer to execute the above A step of.
  • the embodiment of the present invention further provides an out-of-band DMTF signaling interworking system, including a first party, an MGC, and a second party, which implements out-of-band DTMF interworking between the first party and the second party, where the first The party and the second party adopt SIP signaling, and the other party of the first party and the second party adopts non-SIP signaling;
  • an out-of-band DMTF signaling interworking system including a first party, an MGC, and a second party, which implements out-of-band DTMF interworking between the first party and the second party, where the first The party and the second party adopt SIP signaling, and the other party of the first party and the second party adopts non-SIP signaling;
  • the first party is configured to send outband DTMF signaling to the MGC;
  • the MGC is configured to receive out-of-band DTMF signaling sent by the first party, and according to the out-of-band DTMF signaling protocol supported by the second party corresponding to the out-of-band DTMF signaling of the first party, Formatting the out-of-band DTMF signaling of the first party; the second party is configured to receive out-of-band DTMF signaling after the MGC performs format conversion, and send response signaling to the MGC.
  • the embodiment of the present invention further provides a media gateway controller MGC, which implements inter-band DTMF signaling interworking between the first party and the second party, and one of the first party and the second party adopts SIP signaling.
  • MGC media gateway controller
  • the other one of the first party and the second party uses non-SIP signaling
  • the MGC includes a signaling receiving module, a signaling conversion module, and a signaling sending module, where:
  • the signaling receiving module is configured to receive an out-of-band DTMF signaling sent by the first party;
  • the signaling conversion module is configured to: according to the out-of-band DTMF signaling protocol supported by the second party corresponding to the out-of-band DTMF signaling of the first party, the signaling received by the signaling receiving module Format conversion;
  • the signaling sending module is configured to send signaling that is completed by the signaling conversion module to a corresponding receiver.
  • the embodiment of the invention has the following advantages:
  • the SIP can be replaced as the Nc interface in the evolution process of the BICC, completely replacing the processing of the DTMF by the BICC, and ensuring a smooth transition of the service signaling.
  • the implementation of mobile networks all delivers DTMF in an out-of-band manner.
  • the monthly VoIP transmission of DTMF due to IP packet loss caused by IP packet loss improves the reliability of the system.
  • FIG. 1 is a flowchart of a SIP-initiated DTMF interworking with a mobile terminal according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of DTMF interworking between a DTMF and a SIP initiated by a mobile terminal according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of interworking between a SIP-initiated DTMF and a BICC in the case of a notification APM according to Embodiment 2 of the present invention
  • FIG. 4 is a flow chart of interworking between a SIP-initiated DTMF and a BICC in the case of an imperative APM in the second embodiment of the present invention
  • FIG. 5 is a flowchart of interworking between a DTMF initiated by a BICC and a SIP in the case of a notification APM according to Embodiment 2 of the present invention
  • FIG. 6 is a flowchart of interworking between DTMF and SIP initiated by BICC in the case of an imperative APM according to Embodiment 2 of the present invention
  • FIG. 7 is a flowchart of interworking between a DTMF initiated by a SIP and a mobile terminal after splitting INFO signaling according to Embodiment 3 of the present invention
  • FIG. 8 is a flowchart of DTMF interworking between a DTMF and a SIP initiated by a mobile terminal after splitting INFO signaling according to Embodiment 3 of the present invention
  • FIG. 9 is a schematic structural diagram of an outband DMTF signaling interworking system and an MGC device according to an embodiment of the present invention. detailed description
  • the first embodiment of the present invention is an out-of-band DTMF interworking method for SIP and mobile signaling, and combines actual operations, including the following two situations:
  • the flow diagram of the SIP-initiated DTMF interworking with the mobile terminal includes:
  • Step S101 The server sends the SIP INFO signaling to the MGC, including the content definition information of the initiated DTMF, where, according to the situation, the server may determine whether the DTMF duration parameter duration is carried in the SIP INFO signaling;
  • Step S102 The MGC receives the SIP INFO signaling, and connects to the MGW through the Mc (MSC Server-Media Gateway, media gateway controller and media gateway interface) interface between the MGC and the mobile access MGW (Media Gateway).
  • Mc MSC Server-Media Gateway, media gateway controller and media gateway interface
  • Sending MOD.REQ Modify Request, Modify Request Signaling
  • MOD.REQ Modify Request, Modify Request Signaling
  • Step S103 The MGW sends the received DTMF signal to the mobile terminal by using the inband.
  • Step S105 When it is desired to terminate the DTMF session, the MGC sends a MOD.REQ to the MGW through the Mc interface, requesting termination of the DTMF;
  • Step S106 the MGW terminates the operation of transmitting the DTMF to the mobile terminal by using the inband; after the completion of the signal termination operation, the MGW sends a MOD.RSP (Modification Response) to the MGC through the Mc interface, and reports the termination of the DTMF signal;
  • MOD.RSP Modification Response
  • Step S108 After receiving the response signaling that the DTMF terminates successfully, the MGC sends a SIP signaling 200 OK to the server to complete the interworking process.
  • MOD.REQ and MOD.RSP are H.248 signaling between the MGC and the MGW.
  • the MGC and the MGW on the mobile access side pass MOD.REQ and MOD.RSP.
  • Message interaction enables DTMF interworking between SIP and mobile terminals.
  • DTMF and SIP initiated by the mobile terminal are DTMF interworking.
  • Step S201 The mobile terminal sends a mobile signaling START DTMF (Start DTMF) signaling to the MGC through a BSS (Base Station Subsystem) I RNS (Radio Network Subsystem), requesting to start DTMF;
  • BSS Base Station Subsystem
  • I RNS Radio Network Subsystem
  • Step S202 The MGC receives the START DTMF signaling, and sends the SIP to the server.
  • Step S203 After receiving the SIP INFO signaling, the server sends 200 OK signaling to the MGC to confirm the DTMF request.
  • Step S204 The MGC converts the received 200 OK signaling sent by the server to
  • Step S205 When it is desired to terminate the DTMF, the mobile terminal sends STOP DTMF (terminate DTMF) signaling to the MGC;
  • Step S206 After receiving the STOP DTMF signaling, the MGC sends the DTMF signaling to the mobile terminal.
  • STOP DTMF ACKNOWLEDGE terminal DTMF response
  • the mobile network can transmit the DTMF in an out-of-band manner, which can overcome the loss of the signal caused by the IP packet loss in the in-band DTMF under the VoIP network, and can improve the reliability of the system.
  • the INFO passes the DTMF signaling message as follows:
  • Embodiment 2 of the present invention is an out-of-band DTMF interworking method between SIP and BICC, and combines practical operations, including SIP-initiated DTMF and BICC interworking process and BICC.
  • the process of interworking between DTMF and SIP is as follows:
  • the flow chart of the SIP-initiated DTMF interworking with the BICC includes:
  • Step S301 The server NGN/IMS/MGC sends the SIP INFO signaling to the MGC, including the content definition information of the initiated DTMF, where, according to the situation, the server may determine whether to carry the DTMF duration parameter duration in the SIP INFO signaling; S302.
  • the MGC receives the SIP INFO signaling, and sends an APM startup notification signaling (start signal, notify) to the NGN/MGC through the BICC, where the DTMF signal information in the received SIP INFO signaling is included, and according to the SIP INFO letter. Whether the duration parameter information is carried in the order to determine whether to add a Duration information element to the APM initiation notification signaling;
  • Step S303 After receiving the APM startup notification signaling, the NGN/MGC sends an APM start response acknowledge signal to the MGC to report the DTMF transmission status.
  • Step S304 When it is desired to terminate the DTMF transmission, the MGC sends an APM termination notification signaling (stop signal, notify) to the NGN/MGC through the BICC, requesting termination of the DTMF transmission;
  • APM termination notification signaling stop signal, notify
  • Step S305 the NGN/MGC sends an APM termination response to the MGC through the BICC.
  • the signaling (stop signal acknowledge) reports the termination of the DTMF signal.
  • Step S306 After receiving the response signaling that the DTMF terminates successfully, the MGC sends a SIP signaling 200 OK to the server to complete the interworking process.
  • the process of SIP-initiated DTMF interworking with BICC includes the following steps:
  • step S401 the server NGN/IMS/MGC sends the SIP INFO signaling to the MGC, including the content definition information of the initiated DTMF, where the server may determine whether to carry the DTMF duration parameter duration in the SIP INFO signaling according to the situation; S402.
  • the MGC receives the SIP INFO signaling, and sends an APM start command signaling (start signal) to the NGN/MGC through the BICC, where the DTMF signal information in the received SIP INFO signaling is included, and according to the SIP INFO signaling. Whether to carry the duration parameter information to determine whether to add a Duration information element to the APM startup command signaling;
  • Step S403 When it is desired to terminate the DTMF transmission, the MGC sends an APM termination command signaling (stop signal) to the NGN/MGC through the BICC, requesting termination of the DTMF transmission;
  • Step S404 The MGC sends the APM termination command signaling to send the SIP signaling 200 OK to the server after the DTMF terminates successfully, and completes the interworking process.
  • the process of interworking between the DTMF initiated by the BICC and the SIP includes:
  • Step S501 The NGN/MGC sends an APM start notification signaling (start signal, notify) to the MGC, requesting to start the DTMF;
  • Step S502 The MGC receives the APM startup notification signaling, and sends the SIP INFO signaling to the server NGN/IMS/MGC, and according to the APM startup notification signaling, is the duration parameter information;
  • Step S503 After receiving the SIP INFO signaling, the NGN/IMS/MGC sends the message to the MGC. Send 200 OK signaling to confirm the DTMF request;
  • Step S504 The MGC converts the received 200 OK signaling sent by the NGN/IMS/MGC into an APM start signal acknowledge signal, and sends the signal to the NGN/MGC.
  • Step S505 When it is desired to terminate the DTMF, the NGN/MGC sends an APM termination notification signaling (stop signal, notify) to the MGC, requesting termination of the DTMF transmission;
  • Step S506 After receiving the APM termination notification signaling, the MGC sends an APM termination response signaling (stop signal acknowledge) to the NGN/MGC to report the termination of the DTMF signal, and complete the process interaction.
  • APM termination response signaling stop signal acknowledge
  • the process of interworking between DTMF and SIP initiated by BICC includes:
  • Step S601 The NGN/MGC sends an APM start command signaling (start signal) to the MGC, and starts DTMF.
  • Step S602 The MGC receives the APM startup command signaling, and sends the SIP INFO signaling to the server NGN/IMS/MGC, and according to the APM startup command signaling,
  • Step S603 After receiving the SIP INFO signaling, the NGN/IMS/MGC sends 200 OK signaling to the MGC to confirm the DTMF request.
  • Step S604 When it is desired to terminate the DTMF, the NGN/MGC sends an APM termination command signaling (stop signal) to the MGC, terminates the DTMF transmission, and completes the process interaction.
  • stop signal APM termination command signaling
  • the AMG terminates the command signal (stop signal) between the step S603 and the step S604 of the above process, if the 200 OK response of the SIP INFO with the server NGN/IMS/MGC is not completed yet, if After receiving the DTMF request signaling sent by the NGN/MGC, the MGC needs to respond to the failure, or cache the signaling. After the previous SIP INFO/200 OK interaction is completed, that is, after the completion of step S603, the NGN/IMS/MGC is performed. Initiate a new DTMF process.
  • the SIP can be replaced by the BICC in the evolution process of replacing the BICC as the interface between the servers, and the processing of the DTMF by the BICC can be completely replaced.
  • the third embodiment of the present invention is an out-of-band DTMF interworking method between the SIP and the BICC, which is an alternative method of the first embodiment and the second embodiment of the present invention, and can achieve the same object, specifically:
  • the specific splitting method is as follows:
  • the SIP INFO signaling is modified into two signalings, which are respectively used to initiate DTMF and terminate DTMF.
  • the SIP INFO signaling in the foregoing embodiment of the present invention may be modified as follows: (1) INFO passes START DTMF signaling
  • the outband DTMF interworking method for SIP and mobile signaling is modified, and the actual operation includes the following two cases:
  • the flow chart of the SIP-initiated DTMF interworking with the mobile terminal includes:
  • Step S701 The server sends SIP INFO START DTMF signaling to the MGC, and is used to start DTMF, including content definition information of the initiated DTMF, where, according to the situation, the server may determine whether to carry the DTMF duration parameter duration in the SIP INFO signaling. ;
  • Step S702 The MGC receives the SIP INFO START DTMF signaling, and sends a MOD.REQ to the MGW through the Mc interface between the MGC and the MGW, where the DTMF signal information in the received SIP INFO signaling is included, and is configured according to the MGC. Decide whether to carry the duration parameter information;
  • Step S703 The MGW sends the received DTMF signal to the mobile terminal by using the inband.
  • Step S704 After completing the signal sending operation, the MGW sends the MOD.RSP to the MGC through the Mc interface to report the DTMF signal transmission.
  • Step S705 After receiving the MOD.RSP signaling, the MGC converts to a SIP 200 OK signaling, and sends the signal to the NGN/IMS/MGC to report the DTMF startup situation.
  • Step S706 when it is desired to terminate the DTMF session, the NGN/IMS/MGC sends SIP INFO STOP DTMF signaling to the MGC, requesting termination of the DMTF; Step S707, the MGC converts the received SIP INFO STOP DTMF signaling to the MGW of the mobile terminal for MOD.REQ signaling, requesting termination of the DTMF;
  • Step S708 The MGW terminates the operation of sending the DTMF to the mobile terminal by using the inband.
  • Step S709 After completing the signal termination operation, the MGW sends the MOD.RSP to the MGC through the Mc interface to report the termination of the DTMF signal.
  • Step S710 After receiving the response signaling that the DTMF terminates successfully, the MGC sends a SIP signaling 200 OK to the server to complete the interworking process.
  • a flow chart of DTMF interworking between the DTMF and the SIP initiated by the mobile terminal includes:
  • Step S801 The mobile terminal sends a mobile signaling START DTMF signaling to the MGC through the BSS/RNS, requesting to start the DTMF;
  • Step S802 The MGC receives the START DTMF signaling, and sends the SIP INFO START DTMF signaling to the NGN/IMS/MGC, where the carrying of the duration parameter is carried according to the MGC configuration decision;
  • Step S803 After receiving the SIP INFO START DTMF signaling, the NGN/IMS/MGC sends 200 OK signaling to the MGC to confirm the DTMF request.
  • Step S804 The MGC converts the received 200 OK signaling sent by the NGN/IMS/MGC into START DTMF ACKNOWLEDGE, and sends the signal to the mobile terminal.
  • Step S805 When it is desired to terminate the DTMF, the mobile terminal sends STOP DTMF signaling to the MGC.
  • Step S806 the MGC receives the STOP DTMF signaling, and converts to SIP INFO STOP DTMF signaling and sends it to the NGN/IMS/MGC;
  • Step S807 The NGN/IMS/MGC receives the SIP INFO STOP DTMF signaling, and sends a 200 OK signaling to respond;
  • Step S808 After receiving the 200 OK signaling, the MGC sends a STOP DTMF ACKNOWLEDGE signaling to the mobile terminal to respond, and completes the process interaction.
  • an embodiment of the present invention further provides an outband DMTF signaling interworking system, including a first party 1, an MGC 2, and a second party 3.
  • the first party 1 is configured to send outband DTMF signaling to the MGC 2;
  • the MGC 2 is configured to receive the outband DTMF signaling sent by the first party 1, and perform format conversion on the outband DTMF signaling according to the outband DTMF signaling protocol supported by the second party 3;
  • the second party 3 is configured to receive out-of-band DTMF signaling after MGC 2 performs format conversion and send response signaling to MGC 2.
  • the embodiment of the present invention further provides a media gateway controller MGC 2, which includes a signaling receiving module 21, a signaling conversion module 22, and a signaling sending module 23,
  • the signaling receiving module 21 is configured to receive the outband DTMF signaling sent by the first party 1; the signaling conversion module 22 is configured to use the outband DTMF signaling protocol supported by the second party 3 corresponding to the outband DTMF signaling. And performing format conversion on the signaling received by the signaling receiving module 21;
  • the signaling sending module 23 is configured to send signaling that completes the conversion by the signaling conversion module 22 to the corresponding receiver.
  • the MGC 2 further includes a parameter control module 24, configured to determine whether to add a duration identifier to the signaling completed by the signaling conversion module 22 according to the duration identifier or the configuration of the outband DTMF signaling. .
  • a parameter control module 24 configured to determine whether to add a duration identifier to the signaling completed by the signaling conversion module 22 according to the duration identifier or the configuration of the outband DTMF signaling.
  • the MGC 2 further includes a signaling gateway module 25, where the DTMF process initiated by the out-of-band DTMF signaling sent by the first party 1 is completed, but before the second party 3 process is completed, the The DTMF start signaling sent by party 1 fails to respond or is buffered.
  • the embodiment of the present invention implements the outband DTMF interworking between SIP and BICC and mobile signaling by adopting the SIP outband DTMF interworking method and device, and can replace the processing of DTMF by the BICC in the process of replacing the BICC as the Nc interface.
  • the mobile network transmits DTMF in an out-of-band manner, which overcomes the shortcomings of DTMF in-band transmission of DTMF due to IP packet loss caused by IP packet loss, and improves The reliability of the system;
  • the mechanism for transmitting DTMF signaling with two signalings is defined as a mechanism for transmitting with four signalings, so that SIP signaling Corresponding to BICC signaling/mobile signaling - improved DTMF delivery quality.
  • the present invention can be implemented by hardware or by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention can be embodied in the form of a software product that can be stored in a non-volatile storage medium.
  • a computer device (may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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Abstract

L'invention porte sur un procédé pour un interfonctionnement de signalisation par multifréquence à deux tonalités (DTMF) hors bande, qui réalise l'interfonctionnement de signalisation DTMF hors bande entre le premier côté et le second côté, caractérisé par le fait que : l'un du premier côté et du second côté adopte une signalisation par protocole d'ouverture de session (SIP), l'autre du premier côté et du second côté adopte une signalisation non SIP. Le procédé comprend les étapes suivantes : un contrôleur de passerelle multimédia (MGC) reçoit une signalisation DTMF hors bande provenant du premier côté ; le MGC transforme la signalisation DTMF hors bande du premier côté selon le protocole de signalisation DTMF hors bande que supporte le second côté ; le MGC envoie la signalisation DTMF hors bande transformée au second côté. Le mode de réalisation de l'invention porte également sur un système et un équipement d'interfonctionnement de signalisation DTMF hors bande, qui réalisent l'interfonctionnement DTMF hors bande entre signalisation SIP et signalisation non SIP. Le mode de réalisation de l'invention réalise l'interfonctionnement DTMF hors bande avec BICC, une signalisation mobile par transfert de DTMF hors bande par l'intermédiaire de signalisation d'informations SIP, évite une perte de signalisation et assure qu'une signalisation DTMF est transférée de façon fiable.
PCT/CN2008/073646 2007-12-25 2008-12-22 Procédé, système et équipement pour un interfonctionnement de signalisation dtmf hors bande WO2009079960A1 (fr)

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