WO2005122494A1 - Systeme virtuel de groupes d'abonnes telephoniques permettant de mettre en oeuvre l'acces d'abonnes par paquets ip - Google Patents

Systeme virtuel de groupes d'abonnes telephoniques permettant de mettre en oeuvre l'acces d'abonnes par paquets ip Download PDF

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Publication number
WO2005122494A1
WO2005122494A1 PCT/CN2005/000842 CN2005000842W WO2005122494A1 WO 2005122494 A1 WO2005122494 A1 WO 2005122494A1 CN 2005000842 W CN2005000842 W CN 2005000842W WO 2005122494 A1 WO2005122494 A1 WO 2005122494A1
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WIPO (PCT)
Prior art keywords
packet
user
module
pstn
processing module
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PCT/CN2005/000842
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English (en)
Chinese (zh)
Inventor
Feng Wang
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Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2005122494A1 publication Critical patent/WO2005122494A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]

Definitions

  • the present invention relates to a technology for implementing a telephone user group in a communication system, and in particular, to a virtual telephone user group system for implementing Internet Protocol (IP) packet user access in a communication system.
  • IP Internet Protocol
  • PABX private automatic branch exchange
  • CENTREX uses centralized switching services to divide some phone users, such as phone users in an enterprise, into a basic phone user group on the PSTN communication node, and provides it with various PABX functions and some unique telecommunication networks. service function.
  • the PSTN communication node may be a switch of the PSTN end office, long distance office or gateway office.
  • CENTREX and PABX are similar in that they provide a centralized telephone user group with controllable internal telephone exchange capabilities, complete out-of-group calls between internal and external groups, and a series of supplementary telecommunication services.
  • CENTREX is mainly a software concept, and the software that makes up CENTREX is all placed in the communication node in the PSTN.
  • the CENTREX service is actually a service that uses the resources of the PSTN to form a virtual private network and provides virtual PABX functions for PSTN phone users.
  • use CENTREX when establishing a private network, there is no need to set up PABX for telephone users in the private network, and the communication node in the PSTN provides the PABX function.
  • the introduction of CENTREX replaced PABX simplified the PSTN network level, facilitated the unified planning and management of the PSTN, and was of great significance for improving the overall operating level of the PSTN, increasing market coverage and business income.
  • CENTREX uses PSTN resources, that is, communication nodes of PSTN to form a virtual private network, it has the advantages of flexible private network networking, diversified services, and professional maintenance. Therefore, it has been widely used.
  • the CENTREX service is implemented on the communication nodes of the PSTN, and the traditional PSTN users are accessed, such as analog users, V5 users, and integrated service digital network (ISDN) users.
  • PSTN public switched telephone network
  • Figure 1 is a schematic diagram of a system using CENTREX to implement a virtual phone user group, including: communication node 10, user 1, user 2, and user 3 with CENTREX. Among them, user 1, user 2 and user 3 belong to the same virtual private network under the control of the communication node 10 having CENTREX.
  • User 1 is a PSTN analog user and accesses communication node 10 through an analog interface
  • User 2 is an ISDN user and accesses communication node 10 through an ISDN interface
  • User 3 is a V5 user and accesses communication node 10 through a V5 interface.
  • the virtual private network uses the number 7 (No. 7) signaling to geographically disperse the different A plurality of CENTREX of the communication node are connected, that is, a virtual private network is established through a wide area CENTREX (WAC, Wide Area CENTREX).
  • WAC wide area CENTREX
  • the business implementation of the virtual private network established by WAC is no different from the virtual private network established by a single CENTREX.
  • FIG. 2 is a schematic diagram of a system for implementing a virtual telephone user group by using WAC, including: a communication node 10 having CENTREX, a communication node 20 having CENTREX, and a tandem bureau 21.
  • a communication node 10 having CENTREX a communication node 10 having CENTREX
  • a tandem bureau 21 a communication node 10 having CENTREX
  • User 4 and User 5 the communication node 10 and the communication node 20 respectively access the tandem office 21, and the tandem office 21 completes the data exchange between the communication node 10 and the communication node 20, so that the PSTN user 4 under the control of the communication node 10 and the communication node 10 PSTN user 5 under the control of 20 belongs to the same virtual private network.
  • the communication node includes a PSTN user interface module, call control module, and protocol stack processing module.
  • the communication node also includes a CENTREX business processing module for PSTN users and a data management module for PST users.
  • the PSTN user interface module is connected to the protocol stack processing module to provide an interface for PSTN users.
  • the signaling of the PSTN user is sent to the protocol stack processing module through the PSTN user interface module, or the encoded processing result from the protocol stack processing module is sent to the PSTN user through the PSTN user interface module.
  • the protocol stack processing module is connected to the PSTN user interface module and the call control module, respectively, and is used to decode the signaling from the PSTN user to obtain the call signaling recognized by the call control module and send it to the call control module; or The module also encodes the processing result to be sent to the PSTN user, and obtains the encoded processing result that can be identified by the PSTN user and sends it to the PSTN user interface module.
  • the call control module is connected to the protocol stack processing module and the CENTREX service processing module of the PSTN user.
  • the call control module is also connected to the data management module of the PSTN user to query the PSTN user according to the call signaling obtained from the protocol stack processing module.
  • the PSTN user information, PSTN user group information, and corresponding services stored in the data management module of the user control the user to implement various types of calls and send service processing instructions to the CENTREX service processing module of the PSTN user according to the corresponding service; or
  • the processing result obtained by the CENTREX service processing module of the PSTN user is sent to the protocol stack processing module.
  • Call types can be PSTN user calls, PSTN user calls outside the virtual private network, Outgoing calls by PSTN users and incoming calls by PSTN users.
  • the CENTREX service processing module of the PST user is connected to the call control module and the data management module of the PSTN user, and is used to query the PSTN user information, PSTN user group information, and corresponding information stored in the data management module of the PSTN user according to the service processing instruction. Services, after implementing various new CENTREX services and supplementary services for PSTN users, the processing results are sent to the call control module.
  • the data management module of the PSTN user is used to manage the information of the PSTN user, and performs information interaction with the CENTREX service processing module and the call control module of the PSTN user, respectively.
  • the PSTN user data management module stores PSTN user information, PSTN user group information, and corresponding services. With this information, it is possible to use CENTREX to establish a virtual private network for PSTN users.
  • the PSTN user's CENTREX service processing module and call control module can obtain PSTN user information from the data management module through query messages.
  • the STN user group information and corresponding services perform corresponding calls or service processing.
  • the communication node If the communication node supports WAC, the communication node also includes a WAC interface, and the communication node implements WAC inter-office through the WAC interface.
  • IP CENTREX refers to the provision of CENTREX services to IP phone users in the IP packet user solution, but the core network of IP CENTREX is based on BP packet switching.
  • the core network of the existing CENTREX is the circuit-switched network of the PSTN. Regardless of PSTN with CENTREX service or WAC service, it does not support IP packet user access. It cannot access IP packet users and provide CENTREX service or WAC service on the basis of the existing PSTN. Therefore, how to access the IP user in the communication node, especially the IP user in the communication node of the PSTN and realize IP CENTREX has become an urgent problem. Summary of the invention
  • the main object of the present invention is to provide a virtual telephone user group system for IP packet user access, which can establish a virtual private network that supports IP packet user access.
  • a virtual telephone user group system for realizing Internet protocol IP packet user access which is characterized in that the system includes: an IP packet user interface module, an IP packet protocol stack processing module, an IP packet user call control module, and an IP packet user virtual The CENTREX service processing module of the switch and the EP packet user data management module that stores IP packet user information, where:
  • the IP packet user sends signaling to the IP packet protocol stack processing module through the IP packet user interface module.
  • the signaling is encoded by the IP packet protocol stack processing module to generate call signaling, and is sent to the IP packet user call control module.
  • the IP packet user call control module Control the call according to the call signaling, and query the information stored by the IP packet user data management module to obtain the service corresponding to the call signaling.
  • the processing instruction performs service processing, and the processed result is sent to the IP packet user through the coding of the IP packet user call control module, the IP packet protocol stack processing module, and the IP packet user interface module.
  • the DP packet user call control module, the IP packet user CENTREX service processing module, and the IP packet user data management module are arranged in a communication node.
  • the communication node also accesses one or more PSTN users.
  • the IP packet user interface module and the IP packet protocol stack processing module are arranged in a communication node.
  • the EP packet user interface module and the IP packet protocol stack processing module are arranged in a gateway.
  • the IP packet user interface module is set in an access gateway, and the IP packet protocol The stack processing module is set in the IP gateway.
  • the IP packet user call control module is integrated in a call control module of a communication node
  • the IP group user CENTREX service processing module is integrated in the PSTN user's CENTREX service processing module of the communication node of the PSTN.
  • the ⁇ > packet user interface module supports the media gateway control protocol MGCP, H.248 protocol, session initiation protocol SIP or H.323 protocol.
  • the process of the CENTREX business processing module performing business processing according to the business processing instruction is:
  • the CENTREX business processing module queries the information stored by the IP packet user data management module according to the business processing instruction, and according to the acquired IP involved in the current business processing Group user information and group user group information for business processing.
  • the IP packet user data management module is set in a communication node.
  • the IP packet user data management module is integrated in the PSTN user data management module of the PSTN communication node. It can be seen from the above solution that the system provided by the present invention is different from the system provided by the prior art in that the present invention has a CENTREX service and provides IP packet user interface and protocol conversion by modifying a communication node, or by adding a gateway to provide IP packets. The user interface and protocol conversion realize the access of IP packet users in the PSTN with CENTREX service, thereby establishing a virtual private network that supports the access of IP packet users.
  • the system provided by the present invention brings obvious beneficial effects: Firstly, the system provided by the present invention can access IP group users to realize the CENTREX service of IP group users, connect a large number of IP group users to communication nodes of the PSTN, and make full use of IP Network resources, P low networking and operating costs; Secondly, the system provided by the present invention has no impact on PSTN users using the CENTREX service in the original PSTN, and has little impact on the reconstruction and impact of the PSTN network. Finally, the present invention provides The system can set up communication within PSTN with CENTREX service The node completes the management and maintenance of the CENTREX group of the IP grouped users and the unified planning and management of the IP grouped users has a high level of maintenance and management. Brief description of the drawings
  • FIG. 1 is a schematic diagram of a system for implementing a virtual phone user group using CENTREX in the prior art
  • FIG. 2 is a schematic diagram of a system using a WAC to implement a virtual phone user group in the prior art
  • FIG. 3 is a schematic diagram of a system using the CENTREX to implement a virtual phone user group
  • FIG. 4 is a block diagram of a module related to IP packet user processing in a communication node of the present invention
  • FIG. 5 is a system schematic diagram of implementing a virtual phone user group by adding a gateway according to the present invention.
  • the PSTN cannot access IP packet users and provide CENTREX services or WAC services to BP packet users
  • the core network of the CENTREX service or WAC service in the prior art is the PSTN, and the communication nodes in the PSTN are There is no interface for IP packet user access, and it does not have functions such as protocol processing, call management, and CENTREX service management for IP packet user access.
  • the system provided by the present invention sets the call management of the IP packet user and the CENTREX service management of the IP packet user in the communication node of the PSTN, so that the communication node of the PSTN can process the protocol-transformed signaling sent by the BP packet user. .
  • the first thing is to enable IP packet users to access communication nodes and access Protocol conversion between the IP protocol and the protocol supported by PSTN.
  • the present invention can complete the protocol conversion of the transmitted signaling by adding an IP packet user interface module and a packet protocol stack processing module to the communication node, or it can access the IP packet users to
  • the communication node of the PSTN performs protocol conversion on the transmitted signaling and sends it to the communication node, thereby realizing the access of the IP packet user.
  • First embodiment In the communication node of the present invention, functions such as IP packet user access, IP packet user protocol conversion processing, IP packet user call management, and IP packet user CENTREX service management are implemented, thereby achieving The IPTN users in the PSTN of the CENTREX service are connected.
  • FIG. 3 is a schematic diagram of a system for implementing a virtual telephone user group using CENTREX according to the present invention.
  • the system includes a communication node 30, a plurality of PSTN users 31, and at least one IP group user 32.
  • the PSTN user 31 accesses the communication node 30 through the PSTN user interface, and the IP packet user 32 accesses the communication node 30 through the interface 1.
  • the PSTN user 31 and the IP group user 32 belong to a virtual private network governed by the communication node 30.
  • the interface of the IP packet user 32 accessing the communication node 30 1 supports the Media Gateway Control Protocol (MGCP, Medium Gateway Control Protocol), H.248 protocol, SIP (Session Initiation Protocol), or H.323 protocol.
  • MGCP Media Gateway Control Protocol
  • H.248 protocol H.248 protocol
  • SIP Session Initiation Protocol
  • H.323 protocol H.323 protocol.
  • the communication nodes further include: an IP packet user interface module, an IP packet protocol stack processing module, IP packet user call control module, IP packet user CENTREX service processing module and UI packet data management module.
  • the IP packet user interface module is connected to the IP packet protocol stack processing module, and is used to provide interface 1 so as to realize the connection with the IP packet user.
  • the signaling of the IP packet user is sent to the IP packet protocol stack processing module through the IP packet user interface module, or processed by the IP packet protocol stack.
  • the module sends the encoded processing result to the IP packet user through the IP packet user interface module.
  • the IP packet protocol stack processing module is respectively connected to the IP packet user interface module and the IP packet user call control module, and is used to decode the signaling from the IP packet user to obtain the call signaling identified by the IP packet protocol stack processing module; or
  • the processing result from the BP packet user call control module to be sent to the IP packet user is encoded and sent to the IP packet user.
  • the IP packet user can identify the processing result after the encoding process.
  • the function of the IP packet protocol stack processing module is similar to that of the protocol stack processing module in the communication node of the prior art. The difference is that the protocol stack processing module of the prior art processes signaling based on PSTN-related protocols, while the IP packet protocol stack processing module Processes signaling based on the IP packet protocol.
  • the IP packet user call control module is respectively connected to the IP packet protocol stack processing module and the IP packet user CENTREX service processing module, and is also connected to the IP packet user data management module, and is used for receiving call information from the IP packet protocol stack processing module. Lets query the IP packet user information, IP packet user group information, and corresponding services stored by the IP packet user data management module, and control the IP packet users to implement various types of calls and to provide CENTREX services to the IP packet users according to the corresponding services.
  • the processing module sends a service processing instruction; or sends the processing result obtained from the IP packet user CENRTREX service processing module to the IP packet protocol stack processing module.
  • the call types include: calls between IP group users, calls between IP group users and PSTN users, calls within IP group user groups, calls outside IP group user groups, outgoing calls by IP group users, and incoming calls by IP group users And other call types.
  • the function of the IP packet user call control module is similar to that of the prior art user call control module, except that it has the function of controlling the IP packet user according to the call signaling, instead of the PSTN user to implement various types of calls.
  • the IP packet user CENRTREX service processing module and the IP packet user call control respectively The module and the IP packet user data management module are connected, and are used to query the IP packet user information stored in the IP packet user data management module, ⁇ > packet user group information and corresponding services according to the service processing instruction, so as to realize the multi-group of IP packet users. After processing a new CENTREX service and a supplementary service, the processing result is sent to the call control module.
  • the CENTREX service provided to IP packet users may be the same as the CENTREX service provided to PSTN users.
  • the IP packet user data management module is used to manage the information of the IP packet users, and performs information interaction with the IP packet user CENTREX service processing module and the IP packet user call control module, including the IP packet user information, the IP packet user group information, and the corresponding The service can use this information to establish a virtual private network for IP packet users using CENTREX.
  • the virtual private network established for IP packet users may be an independent virtual private network including only IP packet users, or a hybrid virtual private network including IP packet users and PSTN users.
  • the DP packet user CENTREX service processing module and the DP packet user call control module can query the IP packet user data management module for the saved information through a database query message.
  • the present invention can integrate the CENTREX business processing module, the IP packet user call control module, and the IP packet user data management module into the existing PSTN user's CENTREX business processing module, call control module, and PSTN user. Data management module.
  • the IP packet user interface module in the communication node 30 sends the signaling to the IP packet protocol stack processing module; the IP packet protocol The protocol processing stack processing module decodes the received signaling, generates call signaling identified by the IP packet user call control module, and sends the call signaling to the IP packet user call control module; the IP packet user call control module decodes the received call signaling Process it to determine that the call type of the call signaling is a group call. You need to query the IP packet user information, IP group user group information, and corresponding services from the IP packet user data management module.
  • IP group user CENTREX service processing module responds to the service processing instructions to complete the service
  • the processing result is obtained after the processing function, and the processing result is fed back to the IP packet user 32 through the coding of the IP packet user call control module, the IP packet protocol stack processing module, and the IP packet user interface module.
  • the IP packet user CENTREX service processing module When the IP packet user CENTREX service processing module responds to a service processing instruction, it can also go to the IP packet user data management module to query the IP packet user information, the IP packet user group information, and the corresponding service, so as to complete the service processing based on the query information .
  • the PSTN user 31 may not be included in the virtual private network that can access the IP packet user by modifying the communication node shown in FIG. 3, and the virtual private network including the IP packet user 32 is an independent virtual private network at this time.
  • the PSTN user in the present invention can also access the established virtual private network including IP packet users at any time according to the existing technology.
  • a virtual phone user group is implemented by adding a gateway, and a system schematic diagram thereof is shown in FIG. 5: a communication node 40, at least one IP packet user 32, and several PSTN users 31, an access gateway 43 and IP gateway 44.
  • the communication node 40, the access gateway 43 and the IP gateway 44 are connected in order.
  • the communication node 40 and the PSTN user 31 are connected through a PSTN user interface.
  • the access gateway 43 is used to implement the interface function between the PSTN and the IP packet user, Supports protocols such as V5 or ISDN on the PSTN access side.
  • the IP gateway 44 is used to connect IP packet users to the PSTN, and implements codec conversion of signaling between the IP packet users and the PSTN.
  • the IP gateway 44 supports MGCP, H.248, SIP, or H.323 on the IP packet user side. protocol.
  • the interface between the PSTN and the IP gateway 44 can be either a standard El, T1 interface.
  • the communication node 40 can connect to the IP packet user 32 and provide the same CENTREX service as the PSTN user.
  • the data management module of the user in the communication node 40 also needs to store the information of the BP group users, the CENTREX or WAC group information, and the corresponding services.
  • the call control module in the communication node 40 also has The function of controlling IP packet users to implement various types of calls is provided; the CENRTREX service processing module of the PSTN user in the communication node 40 also has functions of realizing various new CENTREX services and supplementary services of IP packet users.
  • one or more communication nodes of the present invention can also access the tandem office as shown in FIG. 2, thereby completing a system for implementing a virtual telephone user group using WAC.
  • the PST communication node of the present invention may also be other communication nodes of the communication system, and the communication nodes used in different communication systems are different.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention se rapporte à un système virtuel de groupes d'abonnés téléphoniques, qui permet de mettre en oeuvre l'accès d'abonnés par paquets IP. L'abonné par paquets IP envoie une signalisation à un module de traitement de piles de protocoles par paquets IP au moyen d'un module d'interface d'abonnés par paquets IP. Une signalisation de l'appel est générée après le passage de ladite signalisation par le module de traitement de piles de protocoles par paquets IP, puis est envoyée au module appelant d'abonnés par paquets IP. Un module de commande d'appels d'abonnés par paquets IP commande l'appel en fonction de la signalisation de l'appel, recherche les informations sauvegardées par un module de gestion de données d'abonnés par paquets IP et obtient le service correspondant à la signalisation de l'appel, puis envoie l'instruction de traitement de service à un module de traitement de service CENTREX d'abonnés par paquets IP. Le module de traitement de service CENTREX d'abonnés par paquets IP traite le service conformément à l'instruction de traitement de service. Le résultat traité sera envoyé à l'abonné par paquets IP par l'intermédiaire du module d'interface d'abonnés par paquets IP, après son codage par le module de commande d'appels d'abonnés par paquets IP puis par le module de traitement de piles de protocoles par paquets IP. Le système selon l'invention peut établir un réseau privé virtuel dans le RTPC pour un abonné par paquets IP.
PCT/CN2005/000842 2004-06-11 2005-06-13 Systeme virtuel de groupes d'abonnes telephoniques permettant de mettre en oeuvre l'acces d'abonnes par paquets ip WO2005122494A1 (fr)

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US7821981B2 (en) * 2005-12-27 2010-10-26 Cisco Technology, Inc. Satellite switch communication over a network
CN101765067B (zh) * 2008-12-24 2013-10-16 中国移动通信集团公司 业务数据同步系统、设备及方法
CN106572275A (zh) * 2015-10-10 2017-04-19 华为技术有限公司 传输信号的方法和装置

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WO2000051290A2 (fr) * 1999-02-23 2000-08-31 Alcatel Internetworking, Inc. Autocommutateur multiservice
WO2002028048A2 (fr) * 2000-09-28 2002-04-04 Telefonaktiebolaget L M Ericsson (Publ) Cadre ip virtuel et procede d'interfacage
CN1471275A (zh) * 2002-07-23 2004-01-28 ��Ϊ�������޹�˾ 用虚拟路由器构建的企业外部虚拟专网系统及方法

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