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WO2007036119A1 - Systeme de tandem et procede pour appeler la route dans ledit systeme - Google Patents

Systeme de tandem et procede pour appeler la route dans ledit systeme Download PDF

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Publication number
WO2007036119A1
WO2007036119A1 PCT/CN2006/001924 CN2006001924W WO2007036119A1 WO 2007036119 A1 WO2007036119 A1 WO 2007036119A1 CN 2006001924 W CN2006001924 W CN 2006001924W WO 2007036119 A1 WO2007036119 A1 WO 2007036119A1
Authority
WO
WIPO (PCT)
Prior art keywords
gateway
interface
tandem
call
downlink call
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2006/001924
Other languages
English (en)
Chinese (zh)
Inventor
Guodao Yang
Zhihong Zhao
Weiqiang Zhou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2007036119A1 publication Critical patent/WO2007036119A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L65/1023—Media gateways
    • H04L65/103—Media gateways in the network
    • 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
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • H04M7/0075—Details of addressing, directories or routing tables

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method for calling routes in a tandem system and a tandem system.
  • NGN Next Generation Network
  • the networking diagram of the softswitch as the gateway is shown in Figure 1.
  • the uplink call to the end office A is called out through the gateway A.
  • all downstream calls through the gateway are routed through the gateway A to the end office A.
  • a downlink call through the gateway such as a downlink call from the gateway A to the end office A
  • there is only one route that is, the route opposite to the route A.
  • the current dual-plane networking structure has the phenomenon of uplink call and downlink call asymmetry.
  • the uplink call has backup route protection, while the downlink call does not have backup route protection.
  • an E1 trunk needs to be added between the gateway A and the gateway B.
  • the E1 is defined by the ITU- T G703, G704, G706 define the communication interface, which not only needs to add additional network construction and maintenance costs, but also does not take full advantage of the NGN network. Summary of the invention
  • the object of the present invention is to provide a method and a tandem system for call routing in a tandem system.
  • the downlink call reliability is improved without increasing the cost of call routing. the goal of.
  • a method for routing a call in a tandem system includes: - a, an interface for setting a downlink call interworking between a first gateway based on a softswitch and a second tandem office;
  • the first gateway exchanges the downlink call it receives through the interface to the second gateway to which it is connected, and the second gateway performs call routing for the downlink call.
  • the two softswitch-based gateways in the step a are: the same type/different softswitch-based gateways;
  • the first tandem office and the second tandem office are each a tandem office that routes backups or a tandem office that is mutually load-balanced.
  • the interworking interface includes: an interface based on a SIP-T protocol.
  • the downlink call received by the first gateway in the step b includes: a downlink call received by the first gateway through the interface communicated with the third gateway, and a downlink call received by the first gateway through the downlink call entry. .
  • the step of the first gateway in the step b to transmit the downlink call received by the first gateway to the second gateway through the interface includes:
  • the first gateway transmits the downlink call it receives to the second gateway through the interface according to the SIP-T protocol signaling.
  • the step b specifically includes: the first gateway transmits the downlink call it receives to the second gateway through the interworking interface; the second gateway transmits the downlink call through the relay gateway connected thereto To the end office belonging to the first gateway.
  • the present invention also provides a tandem system, comprising at least: a softswitch based first gateway and The second gateway of the softswitch is configured to provide an interface for downlink call interworking between the first gateway and the second gateway, where the first gateway receives the downlink call, and passes the downlink call through the The interface is transmitted to the second gateway connected thereto, and the downlink call is routed by the second gateway.
  • a tandem system comprising at least: a softswitch based first gateway and The second gateway of the softswitch is configured to provide an interface for downlink call interworking between the first gateway and the second gateway, where the first gateway receives the downlink call, and passes the downlink call through the The interface is transmitted to the second gateway connected thereto, and the downlink call is routed by the second gateway.
  • the interface includes: an interface based on a SIP-T protocol.
  • the softswitch-based gateways are: softswitch-based gateways of the same type or different types.
  • the tandem system further includes: a trunking gateway belonging to the tandem office, the tandem office is connected to the trunking gateway to which it belongs, and the trunking gateway is connected to one or more end offices;
  • the second gateway transmits the downlink call received by the interface to the home relay gateway, and the relay gateway routes the downlink call to the corresponding end office.
  • the present invention can provide at least two routes for the downlink call by setting the interface of the downlink call interworking between different tandem offices, so that routing and backup can be implemented between multiple downlink call routes. Sharing and other functions; By using the SIP-T interface, routing backup and load sharing of downlink calls can be implemented between different types or the same type of tandem office without adding additional physical devices and connections;
  • the technical solution provided by the present invention achieves the purpose of saving the implementation cost and maintenance cost of downlink call routing backup, load sharing, and the like, and improving the reliability of the downlink call.
  • FIG. 1 is a schematic diagram of networking of a softswitch as a gateway
  • FIG. 2 is a schematic diagram of a dual-plane networking structure
  • FIG. 3 is a schematic diagram of networking of the tandem system of the present invention.
  • the method of the present invention and the hub of the tandem system are: setting an interface for downlink call interworking between the first tandem office and the second tandem office based on the softswitch, and the first gateway receives the downlink call received by the first tandem office
  • the second gateway connected to the second gateway is transmitted through the interface, and the downlink call is routed by the second gateway.
  • the interface for interworking between the downlink calls can be an interface based on the SIP-T (Session Initiation Protocol for Telephones) protocol.
  • the downlink call can be transmitted between the gateways through the signaling of the SIP-T protocol.
  • the two gateways that have the downlink call interworking interface can be the tandem office that is backed up by each other, or the tandem office that is mutually load balanced.
  • the SIP-T protocol is a standardized protocol widely used for interworking between softswitches
  • this interface can be used to implement different types or the same type of tandem without adding additional physical devices and connections.
  • Downlink call transmission between offices For tandem boards of the same type and different types, such as tandem boards with the same model and different models.
  • the interface for interworking between downlink calls between the two gateways can also be a standardized protocol based on other signaling interactions between softswitches.
  • the first gateway can receive the international/domestic downlink from the downlink call entry.
  • the call is transmitted to the second gateway through the interface of the downlink call interworking.
  • the above downlink call entry is an incoming interface for the first gateway call.
  • the primary gateway transmits the international/domestic downlink call received from the downlink call portal through the interface of the downlink call interworking. To the tandem office.
  • the second tandem office After receiving the downlink call through the interface of the downlink call intercommunication, the second tandem office can route the downlink call to the end office belonging to the first tandem office through the relay gateway directly connected thereto, thereby A new route is provided for the downlink call received by the first gateway, which satisfies the requirement of route backup.
  • the first tandem office and the second tandem office are mutually load-sharing tandem offices
  • the first tandem office The international/domestic downlink call received from the downlink call entry is transmitted from the interface of the downlink call intercommunication to the second tandem office.
  • the second gateway After receiving the downlink call through the interface of the downlink call intercommunication, the second gateway can The directly connected trunking gateway routes the downlink call to the end office belonging to the first tandem office, so that the load between the first tandem office and the directly connected trunking gateway is effectively alleviated, and the load sharing requirement is satisfied. .
  • the downlink call received by the first gateway may also be a downlink call that is received from other gateways through the interworking interface, such as the first gateway through its interworking interface with the third gateway.
  • the first gateway can also transmit the downlink call to the second gateway through the interface of the downlink call intercommunication.
  • the present invention does not change the routing process of the uplink call from the end office to the gateway.
  • the tandem system of the present invention comprises: a gateway A, a gateway B, a trunk gateway belonging to the gateway A, and a trunk gateway belonging to the gateway B.
  • Both the gateway A and the gateway B are both softswitch-based gateways, and the types of gateways A and gateways B may be the same or different.
  • a gateway based on the SIP-T protocol is set between the gateway A and the gateway B.
  • the gateway A and the gateway B transmit the downlink call through the interface according to the SIP-T protocol.
  • route A and route A' are backup routes of each other, and can also share routes with each other.
  • tandem system of the present invention is described by taking two tandem offices as an example, and the tandem system may also include more than two tandem offices.
  • tandem system includes multiple tandem offices, the process of implementing call routing for downlink calls between multiple tandem offices is substantially the same as described above, and will not be described in detail herein.
  • the tandem system of the invention enables route routing of uplink calls and downlink calls
  • the load balancing is used to improve the reliability of the downlink call.
  • the present invention fully and effectively utilizes the physical networking of the existing tandem system, and does not need to add additional physical equipment and connections, thereby saving downlink call routing backup and load. Sharing costs and maintenance costs.

Landscapes

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

Abstract

La présente invention concerne un procédé pour appeler la route dans le système de tandem, lui-même comprenant: établissement de l'interface dans laquelle les appels descendants s'interconnectent entre le premier et le second bureau de tandem sur le commutateur souple; le premier bureau de tandem transmet les appels descendants qu'il reçoit au second bureau de tandem lié au premier bureau de tandem via l'interface et le second bureau de tandem appelle la route pour les appels descendants. La présente invention peut fournir au moins deux routes pour l'appel descendant et il peut implémenter les fonctions de secours de route et le partage de charge, etc. entre les multiples routes d'appel descendantes. L'interface dans lequel les appels descendants s'interconnectent entre les bureaux de tandem de la présente invention peut utiliser l'interface du protocole SIP-T et implémenter le secours de route et le partage de charge des appels descendants dans le cas où il n'ajoute pas de dispositif physique supplémentaire et la connexion entre des types de bureaux de tandem différents ou identiques. Il répond ainsi à l'objectif d'économiser le prix de la réalisation et le coût de maintien du secours de route et de partage de charge, etc. des appels descendants et améliore la fiabilité des appels descendants.
PCT/CN2006/001924 2005-09-27 2006-08-01 Systeme de tandem et procede pour appeler la route dans ledit systeme Ceased WO2007036119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510105559.1A CN100544456C (zh) 2005-09-27 2005-09-27 一种汇接系统和汇接系统中呼叫路由的方法
CN200510105559.1 2005-09-27

Publications (1)

Publication Number Publication Date
WO2007036119A1 true WO2007036119A1 (fr) 2007-04-05

Family

ID=37510593

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/001924 Ceased WO2007036119A1 (fr) 2005-09-27 2006-08-01 Systeme de tandem et procede pour appeler la route dans ledit systeme

Country Status (2)

Country Link
CN (1) CN100544456C (fr)
WO (1) WO2007036119A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103581012A (zh) * 2013-10-21 2014-02-12 华为技术有限公司 一种数据传输的方法及路由器
CN106301713B (zh) * 2015-06-05 2020-01-21 中兴通讯股份有限公司 一种实现容灾通信的方法、站点设备及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1331899A (zh) * 1998-12-22 2002-01-16 斯普林脱通讯有限公司 汇接体系结构中连接呼叫的系统和方法
US6816584B1 (en) * 2000-09-11 2004-11-09 Verizon Services Corp. Routing a call through a telecommunications network
CN1627855A (zh) * 2003-12-10 2005-06-15 华为技术有限公司 移动长途汇接中心路由方法及其系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1331899A (zh) * 1998-12-22 2002-01-16 斯普林脱通讯有限公司 汇接体系结构中连接呼叫的系统和方法
US6816584B1 (en) * 2000-09-11 2004-11-09 Verizon Services Corp. Routing a call through a telecommunications network
CN1627855A (zh) * 2003-12-10 2005-06-15 华为技术有限公司 移动长途汇接中心路由方法及其系统

Also Published As

Publication number Publication date
CN100544456C (zh) 2009-09-23
CN1878332A (zh) 2006-12-13

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