WO2006074597A1 - Procede de verification de ligne et moyen de verification de ligne pour repartiteur numerique - Google Patents

Procede de verification de ligne et moyen de verification de ligne pour repartiteur numerique Download PDF

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Publication number
WO2006074597A1
WO2006074597A1 PCT/CN2006/000020 CN2006000020W WO2006074597A1 WO 2006074597 A1 WO2006074597 A1 WO 2006074597A1 CN 2006000020 W CN2006000020 W CN 2006000020W WO 2006074597 A1 WO2006074597 A1 WO 2006074597A1
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WO
WIPO (PCT)
Prior art keywords
detection signal
distribution frame
digital distribution
network element
channel
Prior art date
Application number
PCT/CN2006/000020
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English (en)
Chinese (zh)
Inventor
Binhe Yang
Xiuguo Cui
Dayong Huo
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 WO2006074597A1 publication Critical patent/WO2006074597A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/14—Distribution frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/13—Patch panels for monitoring, interconnecting or testing circuits, e.g. patch bay, patch field or jack field; Patching modules
    • H04Q1/135—Patch panels for monitoring, interconnecting or testing circuits, e.g. patch bay, patch field or jack field; Patching modules characterized by patch cord details
    • H04Q1/136—Patch panels for monitoring, interconnecting or testing circuits, e.g. patch bay, patch field or jack field; Patching modules characterized by patch cord details having patch field management or physical layer management arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing

Definitions

  • the present invention relates to a transmission line fault detection technique in a communication network system, and more particularly to a line-up method based on a digital distribution frame (DDF) and a line-of-line apparatus therefor.
  • DDF digital distribution frame
  • the network element devices in the communication network system are required to have strong data access capabilities. For example, it is not uncommon for a single ordinary network element device to provide more than 1000 2M low-speed electrical interfaces.
  • the E1/T1 service data sent from the outside to the optical transmission device is first connected to the digital distribution frame DDF. And then transferred to the optical transmission device by the DDF (the optical transmission device is a part of the network element device in the communication network system). Therefore, when the communication transmission network is set up, the connection cable between the optical transmission device and the DDF must be connected in advance when the connection is started. However, in the process of connecting the cable, there is inevitably a fault such as poor contact, resulting in the optical transmission device and the DDF. In the process of connecting the connecting cables, it is inevitable that errors will occur.
  • the external loopback command outer ring is sent to the optical transmission device, and the pair of transceiver ports are sent;
  • the connection between the detection instrument and the pair of transceiver ports is disconnected. Restore the cable loopback status of the DDF port, and then send an external loopback command to the optical transmission device to cancel the outer ring of the pair of transceiver ports.
  • test instrument Connect the test instrument to the next pair of transceiver ports of the DDF, start detecting the connection cable between the pair of transceiver ports and the optical transmission device under the DDF, and so on, until all the transceiver ports of the DDF pass the test, and the line process ends. .
  • the technical problem to be solved by the present invention is to propose a digital distribution frame-based method and a line-up device thereof which can improve the efficiency of the line and reduce the workload of the fault location.
  • the present invention proposes a method for aligning lines based on a digital distribution frame, including the steps:
  • the manner in which the detection signal is generated includes:
  • the detection instrument capable of supporting the generation of the detection signal is interoperable with the network element device.
  • the output port for receiving the detection number on the digital distribution frame and the receiving port for looping back the detection signal to the network element device are the same transceiver port.
  • an output port for receiving the detection signal on the digital distribution frame and a receiving port for looping back the detection signal to the network element device are misaligned transceiver ports.
  • the detection signal is a pseudo random code.
  • the network element device is an optical transmission device.
  • the optical transmission device encapsulates the generated pseudo random code in an E1 signal and transmits the pseudo random code to the digital distribution frame.
  • the transmission channel and the receiving channel formed by the connection between the network element device and the digital distribution frame are configured as follows: All E1/T1 port cables of the digital distribution frame The loopback is sent and received, and the output port TX of each channel is connected to the receiving port RX of the path.
  • the transmission channel and the reception channel formed by the connection between the network element device and the digital distribution frame are configured as follows: All the ports of the digital distribution frame are looped back and forth by the cable, and the output port TX of each channel is pressed. The order is connected to the receiving port RX of the way and the receiving port RX of the other way.
  • the transmission channel and the reception channel formed by the connection between the network element device and the digital distribution frame are configured as follows: All ports of the digital distribution frame are looped through the cable, and the output port TX of each channel is The receiving port RX of the other way is connected in a wrong position.
  • the present invention also provides a line-aligning device based on a digital distribution frame, comprising: a detection signal generating unit, configured to generate a detection signal;
  • a detection signal sending unit configured to send the detection signal generated by the detection signal generating unit to the digital distribution frame through a connection cable as a transmission channel between the network element device and the digital distribution frame;
  • a determining unit configured to determine whether the detection signal can be received through a corresponding connection cable that is a receiving channel between the network element device and the digital distribution frame;
  • a detection result generating unit configured to generate, according to the determination result of the determining unit, a result of the correct connection of the connection cable corresponding to the pair of transceiver channels when the determination result is yes; and generate the pair when the determination result is no
  • the network element device is an optical transmission device
  • the detection signal generating unit is the optical transmission a mapping module inside the transmission device capable of supporting generation of the detection signal
  • a detection instrument externally connected to the network element device and capable of supporting the generation of the detection signal.
  • the detection signal generated by the detection signal generating unit is a pseudo random code.
  • the present invention is based on the method of aligning the digital distribution frame and the line-of-line device transmitting the detection signal generated by the network element device in the network system as a connection cable of the transmission channel between the network element device and the DDF to the DDF, and monitoring Is it possible to receive the detection signal on the corresponding connection cable that is the receiving channel between the network element device and the DDF, to detect whether the connection cable corresponding to the transceiver channel between the network element device and the DDF is correctly connected, thereby achieving the alignment Purpose; and because the detection of the detection signal during the entire line-to-line process and the determination of whether the DDF loopback detection signal can be correctly received is automatically completed by the system, there is no need to manually - test the corresponding connection line of each pair of transceiver ports on the DDF. Whether there is a connection failure of the cable, thus improving the efficiency of the line, and reducing the workload of fault location during the line process, and also avoiding the influence of the line technician's own technical factors on the accuracy of the entire
  • Figure 1 is a schematic diagram of the correct connection of the cable between the E1/T1 interface board and the DDF on the optical transmission equipment;
  • connection failure between a connection cable of an E1/T1 interface board and a DDF on an optical transmission device
  • FIG. 3 is a schematic diagram of a fault in the line between the E1/T1 interface board and the DDF on the optical transmission equipment;
  • Figure 4 is a schematic diagram of the connection between the E1/T1 interface board and the DDF on the optical transmission equipment.
  • FIG. 5 is a schematic diagram of a fault in the connection between the E1/T1 interface board and the DDF on the optical transmission equipment;
  • FIG. 6 is a schematic diagram of a fault in the connection between the E1/T1 interface board and the DDF on the optical transmission equipment;
  • FIG. 7 is a flow chart of the main implementation process of the method for aligning the digital distribution frame based on the present invention Figure
  • FIG. 8 is a schematic diagram of an implementation of the method for aligning a digital distribution frame according to the present invention directly connected to a DDF co-transport port;
  • FIG. 9 is a schematic diagram of the implementation of the method for the alignment of the digital distribution frame according to the present invention in the case where the DDF misalignment transceiver port is connected;
  • FIG. 10 is a schematic diagram of an implementation of the method for aligning a digital distribution frame according to the present invention in combination with a DDF co-transport port direct connection and a DDF transceiving port misalignment connection;
  • Figure 11 is a block diagram showing the specific structure of the line-aligning device based on the digital distribution frame of the present invention. detailed description
  • connection cable between a network element device (such as an optical transmission device) and a DDF in a communication network system:
  • Figure 1 is a schematic diagram showing the correct connection of the cable between the E1/T1 interface board and the DDF on the optical transmission device.
  • the port indicated by the double box in the figure is the output port Tx, and the port represented by the double circle is the receiving port. Rx, the same below);
  • FIG. 2 is a schematic diagram showing the connection and disconnection of the connection cable between the E1/T1 interface board and the DDF on the optical transmission equipment.
  • the fault phenomenon is that the Txl on the E1/T1 interface board is connected to the Rx2 of the DDF.
  • Rxl on the E1/T1 interface board is connected to the Tx2 of the DDF, thereby forming a fault that the transceiver port is just reversed;
  • Figure 3 is a schematic diagram showing the faulty connection between the E1/T1 interface board and the DDF on the optical transmission equipment
  • Figure 4 is a schematic diagram showing the connection failure between the E1/T1 interface board and the DDF on the optical transmission equipment.
  • Figure 5 is a schematic diagram showing the connection failure between the E1/T1 interface board and the DDF on the optical transmission equipment.
  • Figure 6 is a schematic diagram showing the fault of the transmission and reception error between the E1/T1 interface board and the DDF on the optical transmission equipment;
  • connection cable between the NE device and the DDF may have the combination of the above multiple faults.
  • the network element device and Connection cables between the DDFs may also have fault modes such as impedance mismatch, open cable, shorted cable, and poor plug/socket contact.
  • the present invention is based on a method for aligning a digital distribution frame and a line device for generating a detection signal according to a random signal characteristic of a pseudo random code (prbs) or other coded codeword, and automatically generating a detection by a network element device in the network system.
  • the signal is sent to the DDF through the sending channel, and it is determined whether the detection signal can be received on the corresponding receiving channel, so as to detect whether the connection between the network element device and the DDF corresponding to the pair of transmitting and receiving channels is correctly connected. Detection.
  • FIG. 7 is a flow chart of the main implementation process principle of the method for aligning the digital distribution frame according to the present invention; the implementation process is as follows:
  • Step S10 generating a detection signal; wherein the generated detection signal may be prbs, and since the prbs is a repeatable binary sequence having random statistical characteristics, the pseudo-random code is used to fill the pseudo-synchronous digital system (PDH, ) or the synchronous digital system.
  • PDH pseudo-synchronous digital system
  • SDH, transmit data frames, not only can test the connection cable that is the transmission and reception channel between the network element device and the DDF, but also test the connection quality of the connection cable; of course, the generated detection signal can also be other Type test code; the way to generate the detection signal can be:
  • Step S20 the detected signal generated by the network element device in the network system is sent to the DDF through a connection cable as a transmission channel between the network element device and the digital distribution frame DDF;
  • Step S30 the network element device determines whether the detection signal can be received through a corresponding connection cable that is a receiving channel between the network element device and the DDF, and if yes, step S40 is performed; otherwise, step S50 is performed;
  • Step S40 indicating that the connection cable corresponding to the pair of transceiver channels is correct between the network element device and the DDF;
  • step S50 it is indicated that the connection cable connection corresponding to the pair of transceiver channels between the network element device and the DDF is faulty.
  • the network element device in the network system may be an optical transmission device, or may be another network device that requires a large number of cable connections, including a program-controlled switch.
  • most E1/T1 mapping modules used by optical transmission equipment support the generation and monitoring of test codes such as pseudo-random code prbs, so that this function of the E1/T1 mapping module is used to generate
  • the test signal is used to detect whether the connection cable connection between the optical transmission device and the DDF is correct. This implementation not only does not require the instrument during the line-up process, but also can detect cable connection errors and cable connection, short circuit and other serious connection failures.
  • the optical transmission device in the network system can encapsulate the generated prbs in the E1 signal and send it to the DDF through the transmission channel between the optical transmission device and the DDF.
  • the output port Tx for receiving the detection signal sent by the network element device on the DDF and the receiving port Rx for looping back the detection signal to the network element device are the same transceiver port, as shown in FIG. It is a schematic diagram of the implementation of the digital distribution frame based on the digital distribution frame in the case where the DDF is connected directly to the same port. As shown in FIG. 8 , the DDF same transceiver port refers to each output port Tx on the DDF and the corresponding The receiving port Rx is directly connected, so the specific line-to-line process is as follows:
  • each transmission channel is a prbs transmission channel, that is, a connection cable between the optical transmission device and the DDF can be used to transmit the prbs, where
  • the function can be realized by reading and writing the relevant control register of the E1/T1 mapping module in the optical transmission device;
  • the optical transmission device scans all the receiving channels in turn to determine whether the correct prbs code stream can be received. (Because DDF does not perform any processing on the signal, the signal can only be looped back, so the prbs pseudo-random loopback by DDF The code stream should be consistent with the prbs code stream that the optical transmission device sends to the DDF through the transmission channel);
  • the optical transmission device if the optical transmission device does not correctly receive the prbs code stream through the receiving channel, or receives the correct prbs code stream, but finds that the transmission channel number for transmitting the prbs code stream is inconsistent with the receiving channel number for receiving the prbs code stream, then The optical transmission device considers that there is a fault in the connection cable corresponding to the transceiver channel, and reports corresponding error information.
  • the above-mentioned line-of-line process shown in FIG. 8 can detect all faults such as connection error and impedance mismatch, except for line-to-line transmission and reverse line-to-line misalignment.
  • the output port Tx for receiving the detection signal sent by the network element device on the DDF and the receiving port Rx for looping back the detection signal to the network element device may also be a misaligned transceiver port, as shown in FIG.
  • the figure is a schematic diagram of the implementation of the digital distribution frame based on the digital distribution frame in the case of the DDF misalignment transceiver port connection.
  • the DDF misalignment transceiver port refers to the external output port Tx and the reception of the DDF by cable.
  • Port Rx is misaligned, as shown in Figure 9, Txl connects Rx2, Tx2 connects Rx3 TxN-1 connects RxN; of course, the opposite connection, such as
  • Rxl connection Tx2, Rx2 connection Tx3 RxN-1 connection TxN is also available.
  • the specific line-to-line process is as follows:
  • each transmission channel is a prbs transmission channel, that is, a connection cable between the optical transmission device and the DDF can be used to transmit the prbs code, where This function can be realized by reading and writing the relevant control register of the E1/T1 mapping module in the optical transmission device;
  • the optical transmission device scans all the receiving channels in turn to determine whether the correct prbs code stream can be received
  • the optical transmission device If the optical transmission device does not correctly receive the prbs code stream through the receiving channel, or receives the correct prbs code stream, but finds that the transmission channel number for transmitting the prbs code stream and the receiving channel number for receiving the prbs code stream do not match the figure When the transmission port is in a mismatched connection relationship, the optical transmission device considers that there is a fault in the connection cable corresponding to the transceiver channel, and reports the corresponding error information.
  • the above-mentioned line-to-line process shown in FIG. 9 is similar to the above-mentioned line-to-line process shown in FIG. 8, except that the connection relationship of the DDF external port is changed, and there is no connection between the first transmission port and the last reception port, so FIG. 9
  • the on-line process shown can also detect false faults such as all connection error faults and impedance mismatches except for line-to-wire transmission and reverse line-to-line misalignment.
  • FIG. 10 is a schematic diagram of the implementation of the digital distribution frame-based method of the present invention in combination with the DDF co-transport port direct connection and the DDF transceiving port misalignment connection;
  • the direct connection of the same transceiver port and the DDF transceiver port are connected by a longer cable.
  • One end is fixedly connected to the output port TX1 of the DDF, and the other end is connected to the receiving port Rxl, Rx2 RxN in sequence, as shown in FIG. .
  • the specific alignment process is as follows:
  • the line-to-line process shown in FIG. 10 can detect faults in the connection cable that is used as the receiving channel between the network element device and the DDF, such as the fault of the line transceiver and the misalignment between the lines, but cannot detect Whether the connection cable of the transmission channel between the NE device and the DDF is normal.
  • the present invention also proposes a digital distribution frame-based alignment device.
  • FIG. 11 is a block diagram of a specific structure of a digital distribution frame-based alignment device according to the present invention.
  • the line device specifically includes:
  • the detection signal generating unit 10 is mainly configured to generate a detection signal, where the generated detection signal may be a pseudo prbs, or may be other types of detection codes;
  • the detection signal transmitting unit 20 is connected to the detection signal generating unit 10, and is mainly used for transmitting the detection signal generated by the detection signal generating unit 10 to the DDF through a connection cable as a transmission channel between the network element device and the DDF;
  • the determining unit 30 is connected to the detecting signal sending unit 20, and is mainly used for determining whether a corresponding detecting signal can be received through a corresponding connecting cable that is a receiving channel between the network element device and the DDF;
  • the detection result generating unit 40 is connected to the determining unit 30, and is mainly used for determining the result of the determination by the determining unit 30, and when the determination result is YES, generating the correct result information of the connection cable connection corresponding to the pair of transmitting and receiving channels; When the determination result is no, the result information of the connection connection connection corresponding to the pair of transceiver channels is generated.
  • the network element device mentioned above may be an optical transmission device in a network system, or may be another telecommunication device that requires a large number of cable connections, including a program-controlled switch.
  • the detection signal generating unit 10 may be a mapping module inside the optical transmission device capable of supporting the generation of the detection signal (the existing optical transmission device generally includes E1/T1)
  • the Mapping module is mapped, and the Mapping module generally supports the generation of test codes such as prbs.
  • the detection instrument capable of supporting the generation of the detection signal may be used to generate the detection signal, and the input and output end of the detection instrument is connected to the network element device.
  • the other unused port, that is, the output end of the detecting instrument is connected to the transmitting port Txn of the network element device (the port ⁇ is an unused port), and the receiving end of the detecting instrument is connected to the network element device.
  • the receiving port Rxn (the port Rxn is an unused port), so that the detecting instrument that generates the detection signal is externally connected to the network element device for interworking with the network element device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé de vérification de ligne pour un répartiteur numérique, lequel procédé comprend les étapes suivantes: production d'un signal de vérification; un dispositif d'élément en réseau envoie le signal produit au répartiteur numérique par l'intermédiaire d'un câble de connexion, lequel correspond à un canal de transmission entre l'élément en réseau et le répartiteur; évaluation pour savoir si le signal de vérification est reçu par l'intermédiaire du câble de connexion correspondant qui relie l'élément en réseau et le répartiteur, et si le signal de vérification est reçu, le câble de connexion qui est le canal de transmission et de réception est connecté correctement; dans le cas contraire, il se produit une défaillance dans ledit câble de connexion. Cette invention concerne également un moyen de vérification de ligne pour un répartiteur. Le mode de réalisation décrit dans cette invention permet d'améliorer l'efficacité de la vérification de ligne et de réduire la charge de travail liée à la localisation de la défaillance.
PCT/CN2006/000020 2005-01-17 2006-01-09 Procede de verification de ligne et moyen de verification de ligne pour repartiteur numerique WO2006074597A1 (fr)

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Application Number Priority Date Filing Date Title
CN 200510002336 CN1809176B (zh) 2005-01-17 2005-01-17 基于数字配线架的对线方法及其对线装置
CN200510002336.2 2005-01-17

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CN114221880A (zh) * 2021-11-23 2022-03-22 上海天诚通信技术股份有限公司 一种网络扫描仪***的并行控制方法

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CN103401586B (zh) * 2013-08-20 2015-06-17 国家电网公司 通信线路故障检测装置及方法
CN105577948A (zh) * 2014-11-06 2016-05-11 中兴通讯股份有限公司 验证方法、装置及***
CN105588993A (zh) * 2015-08-18 2016-05-18 杭州华三通信技术有限公司 一种信号测试方法、被测设备和信号测试***
CN107703411A (zh) * 2017-10-27 2018-02-16 通号工程局集团北京研究设计实验中心有限公司 一种快速检查sdh传输***中线路质量的装置和方法
CN109474334A (zh) * 2018-10-31 2019-03-15 国网四川省电力公司达州供电公司 一种具有通道检测和故障定位功能的数字配线单元
CN109507514B (zh) * 2018-10-31 2021-07-06 安徽奕辉电子科技有限公司 一种设备线路故障检测装置及方法

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CN114221880A (zh) * 2021-11-23 2022-03-22 上海天诚通信技术股份有限公司 一种网络扫描仪***的并行控制方法
CN114221880B (zh) * 2021-11-23 2023-08-25 上海天诚通信技术股份有限公司 一种网络扫描仪***的并行控制方法

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