WO2008011835A1 - Dispositif et procédé de mise en oeuvre d'une sauvegarde pour l'interface e1/t1 - Google Patents

Dispositif et procédé de mise en oeuvre d'une sauvegarde pour l'interface e1/t1 Download PDF

Info

Publication number
WO2008011835A1
WO2008011835A1 PCT/CN2007/070338 CN2007070338W WO2008011835A1 WO 2008011835 A1 WO2008011835 A1 WO 2008011835A1 CN 2007070338 W CN2007070338 W CN 2007070338W WO 2008011835 A1 WO2008011835 A1 WO 2008011835A1
Authority
WO
WIPO (PCT)
Prior art keywords
interface
board
standby
interface board
relay
Prior art date
Application number
PCT/CN2007/070338
Other languages
English (en)
Chinese (zh)
Inventor
Weifeng Fang
Zhenya Li
Nengwu Xiang
Yaowen Zhang
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 WO2008011835A1 publication Critical patent/WO2008011835A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Definitions

  • the present invention relates to the field of communications, and in particular, to an apparatus and method for backing up an E1/T1 interface.
  • PCM30 nominal rate 2048kbit/s
  • Tl PCM24, nominal rate 1544kbit/s
  • the interface is an international standard and is a common interface type for network devices.
  • the basic design idea of the outgoing mode of the interface is as follows: ⁇
  • the frame and the analog part of the E1/T1 interface are integrated on the board.
  • the board itself does not have an interface.
  • the interface is placed on the backplane.
  • use the SMB interface to release the backplane.
  • the basic design idea of the outgoing mode of the interface is: Integrate the digital and analog parts of the E1/T1 interface on the board.
  • the single-board panel has an interface. There are many outlets. You can use the SMB interface to select the panel outlet mode. ⁇ Use the panel outlet mode of interface modes such as DB100, DB50, DB25, etc., which is suitable for the design of front plug or front and rear plug-in frame.
  • E1/T1 interface damage is one of the highest proportions of board failures.
  • E1/T1 interface backup Due to the technical specificity of the E1/T1 interface, it has been difficult to implement E1/T1 interface backup. Because the network status of the board adopting the E1/T1 interface is important, in order to meet the requirements of low cost and reliability, the board that uses the E1/T1 interface needs to use the inter-board backup mode. If the E1/T1 interface of the interface card is damaged or the board is faulty, the system can automatically switch all the E1/T1 interfaces of the board to the adjacent standby interface board to enhance the E1. The reliability of the /T1 interface improves the stability of the system.
  • the embodiment of the present invention provides an apparatus and method for implementing E1/T1 interface backup, thereby
  • a device that implements the backup of the E1/T1 interface including: the main interface board and the standby interface board;
  • the front panel of the main interface board and the standby interface board are connected by a Y-type cable.
  • the Y cable is connected to the external E1/T1 interface line:
  • the main interface board and the standby interface board include a relay, and the internal E1/T1 circuit of the main interface board or the standby interface board that is working normally is selectively connected to the external E1 through the relay.
  • the /T1 interface line is connected.
  • the internal E1/T 1 circuit of the working main interface board or the standby interface board is selectively connected to the external E1/T1 interface line through the relay.
  • the front panel of the main interface board and the standby interface board are connected by a Y-type cable, and the The Y cable is connected to the external E1/T1 interface line.
  • the invention overcomes the defects of the cable connection mode of the main and standby front board and the external E1/T 1 interface line in the prior art, thereby saving transmission resources and reducing operating costs.
  • FIG. 1 is a structural diagram of an apparatus for implementing E1/T1 interface backup according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for implementing E1/T1 interface backup according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a solid state relay used in an embodiment of the present invention.
  • FIG. 4 is an embodiment of the present invention using a solid state relay
  • FIG. 5 is a schematic structural diagram of a pulse relay used in an embodiment of the present invention.
  • FIG. 6 is an embodiment of the present invention using a pulse relay
  • a circuit connection diagram of a device that implements E1/T1 interface backup is shown.
  • the E1/T1 interface is divided into two parts, in which the digital and active parts are integrated on the front panel, the analog and passive parts are integrated on the rear board, the front panel and the back plug The boards together form an interface board.
  • the device has a main interface board 1 and a standby interface board 2.
  • the circuits and structures of the main and backup interfaces are identical. The same function can be completed.
  • the boards of the primary and backup interfaces can be set to be the primary backup. Relationships, that is, any one of the primary and backup interface cards can be used as the primary interface card, and the other is used as the standby interface card to form a complete 1:1 backup relationship. If the main interface board 1 fails or is damaged, the switch is replaced by the standby interface board 2.
  • the front panel of the main and standby interface boards is connected by Y-type cable, that is, the signal of the external E1/T1 interface line is input to the main and standby through the front panel.
  • the relays J 1 and J3 of the interface board reach the independent and unaffected transceiver circuits in the main and standby interface boards, and finally reach the E1/T1 interface module in the main and standby interface boards.
  • the signal processed by the E1/T1 interface module of the main and standby interface boards is output to the external El/Tl interface line through relays J2 and J4, where TPSCTL is the relay control signal, which is output by the driver, and the contact switch of the control relay or Select the contact to be turned on.
  • the internal E1/T1 circuit of only one main interface board is connected to the external E1/T1 interface line at the same time, and the relay interface of the standby interface that is not connected is relayed internally.
  • the wiring arrangement between them constitutes a loopback channel for easy testing.
  • the status of the relay shown in Figure 1 is the normal working state of the current interface board. It can be seen that the main interface board 1 is in the closed state through the control relays Jl, J 2, so that the main interface is single.
  • the internal E1/T1 circuit of the board 1 is connected to the external E1/T1 interface line; and the standby interface board 2 is disconnected by the control relay, so that the E1/T1 circuit of the standby interface board 2 and the external E1/T1 The interface line is disconnected, and the internal interface of the standby interface board 2 constitutes a loopback channel that can be used for testing.
  • the standby interface board 2 In the device shown in Figure 1, only the primary interface board 1 can receive and transmit E 1/T1 signals.
  • the processing procedure of the method for implementing the E1/T1 interface backup includes the following steps:
  • Step (201) Set the main interface board and the standby interface board that can implement the same function and the primary standby relationship.
  • the front panel of the main interface board and the standby interface board is connected by a Y-type cable.
  • the Y-type cable is connected to the external E1/T1 interface line, and the main interface board is reserved.
  • the interface board contains relays.
  • connection/disconnection of the interface line is selected.
  • the specific implementation of the present invention will be described in detail below with reference to the specific embodiments:
  • a terminal input control signal makes
  • the circuit connection diagram of the device that implements the E1/T1 interface backup The main and backup interface boards require a total of four relays.
  • the relay signal is controlled by the control signal.
  • the relays J1 and J2 are switched to the B1 and D1 terminals, the B2 and D2 terminals are respectively connected, and the D1 and D2 terminals are connected.
  • the switches are switched to the B3 and C3 terminals, the B4 and the C4 terminals are respectively connected, and the D3 and D4 terminals are connected.
  • the standby interface board 2 is in the ON state, and the main interface board 1 is in the disconnected state.
  • the internal E1/T1 circuit of the main interface board 1 constitutes a loopback channel, and the test and maintenance of the main interface board 1 can be performed.
  • the driver for controlling the relay switching control signal can select a triode, or a MOS (Metal-Oxide-Semiconductor, metal-oxide-semiconductor) tube, a Darlington tube, etc., driving method and circuit design It is described in the prior art and will not be repeated here.
  • MOS Metal-Oxide-Semiconductor, metal-oxide-semiconductor
  • the circuit connection diagram of the device that implements the E1/T1 interface backup The main and backup interface boards require a total of two relays.
  • the relay signal is controlled by the control signal.
  • the D11 and C211 terminals, D21 and C221 terminals in the relay J1 are respectively connected, and the C211 and C221 terminals are connected.
  • the relay J2 D12 and C112 are connected, and the D22 and C122 are respectively connected.
  • C212 and C222 are connected.
  • the standby interface board 2 is in the ON state
  • the main interface board 1 is in the disconnected state
  • the main interface board is in the open state.
  • the internal E1/T1 circuit of 1 constitutes a loopback channel, and the test and maintenance of the main interface board 1 can be performed.
  • the driver for controlling the relay switching control signal can select a triode, or a MOS tube, a Darlington tube, etc.
  • the driving method and circuit design are described in the prior art, and are not heavy here. Said.
  • the front panel of the main interface board and the standby interface board are connected by a Y-type cable, and the Y-type cable is connected to the external E1/T1. Line connection. It overcomes the shortcomings of the prior art that the cable connection mode of the main and standby front board and the external E1/T1 interface line is not provided, thereby saving transmission resources and reducing operating costs.
  • the embodiment of the present invention provides a loopback function of the standby interface board, which improves the testability of the board, thereby improving the stability of the system.
  • the transceivers of the main and standby interface boards are all provided with relays to avoid receiving E1/T1 signals.
  • the transformers in the E1/T1 interface module are connected in parallel to affect the receiving capability of the E1/T1 signals, and the same can be avoided.
  • the lightning striker will destroy the E1/T1 port of the main and standby interface boards, and the anti-lightning performance will be greatly improved, avoiding major accidents such as downtime.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

L'invention concerne un dispositif et un procédé permettant de mettre en oeuvre une sauvegarde pour l'interface E1/T1. Le dispositif comporte une carte d'interface principale et une carte d'interface de réserve. Les deux cartes comportent un module d'interface E1/T1 et au moins un relais. Dans le cas où une des deux cartes d'interface est en panne, l'autre carte est mise en exploitation par le relais.
PCT/CN2007/070338 2006-07-21 2007-07-20 Dispositif et procédé de mise en oeuvre d'une sauvegarde pour l'interface e1/t1 WO2008011835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006101033703A CN100479341C (zh) 2006-07-21 2006-07-21 一种实现e1/t1接口备份的设备及方法
CN200610103370.3 2006-07-21

Publications (1)

Publication Number Publication Date
WO2008011835A1 true WO2008011835A1 (fr) 2008-01-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/070338 WO2008011835A1 (fr) 2006-07-21 2007-07-20 Dispositif et procédé de mise en oeuvre d'une sauvegarde pour l'interface e1/t1

Country Status (2)

Country Link
CN (1) CN100479341C (fr)
WO (1) WO2008011835A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100479341C (zh) * 2006-07-21 2009-04-15 华为技术有限公司 一种实现e1/t1接口备份的设备及方法
CN101146144B (zh) * 2007-10-11 2010-06-23 中兴通讯股份有限公司 E1/t1接口电路和具有主从结构的e1/t1接口电路装置
CN101997184B (zh) * 2009-08-21 2013-06-05 中兴通讯股份有限公司 一种分叉电缆及应用该分叉电缆的设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639894B1 (en) * 2000-05-03 2003-10-28 Metro-Optix, Inc. Communications interconnect with make-before-break signal routing
CN1661937A (zh) * 2004-02-25 2005-08-31 华为技术有限公司 一种采用继电器实现备份的e1/t1接口
CN1764080A (zh) * 2005-11-15 2006-04-26 中兴通讯股份有限公司 一种实现主备倒换的装置和方法
CN1777056A (zh) * 2004-11-16 2006-05-24 华为技术有限公司 单板保护倒换装置
CN1996772A (zh) * 2006-07-21 2007-07-11 华为技术有限公司 一种实现e1/t1接口备份的设备及方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639894B1 (en) * 2000-05-03 2003-10-28 Metro-Optix, Inc. Communications interconnect with make-before-break signal routing
CN1661937A (zh) * 2004-02-25 2005-08-31 华为技术有限公司 一种采用继电器实现备份的e1/t1接口
CN1777056A (zh) * 2004-11-16 2006-05-24 华为技术有限公司 单板保护倒换装置
CN1764080A (zh) * 2005-11-15 2006-04-26 中兴通讯股份有限公司 一种实现主备倒换的装置和方法
CN1996772A (zh) * 2006-07-21 2007-07-11 华为技术有限公司 一种实现e1/t1接口备份的设备及方法

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CN100479341C (zh) 2009-04-15
CN1996772A (zh) 2007-07-11

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