JPS58116843A - Monitoring system of fault transmission line of tandem connection circuit - Google Patents

Monitoring system of fault transmission line of tandem connection circuit

Info

Publication number
JPS58116843A
JPS58116843A JP56213675A JP21367581A JPS58116843A JP S58116843 A JPS58116843 A JP S58116843A JP 56213675 A JP56213675 A JP 56213675A JP 21367581 A JP21367581 A JP 21367581A JP S58116843 A JPS58116843 A JP S58116843A
Authority
JP
Japan
Prior art keywords
transmission line
pulse
signal
fault
circuit
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.)
Pending
Application number
JP56213675A
Other languages
Japanese (ja)
Inventor
Shinji Kajiwara
信二 梶原
Hidesuke Motoi
本居　秀介
Noriyuki Kutsuwada
轡田　憲行
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56213675A priority Critical patent/JPS58116843A/en
Publication of JPS58116843A publication Critical patent/JPS58116843A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To monitor a faulty transmission line without requesting an operator to move a trailing-stage terminal repeating device by by-passing a terminal repeating device when the error rate of a pulse signal inputted to this terminal repeating device exceeds a prescribed value. CONSTITUTION:To monitor a fault position on a digital transmission line extending from a terminal repeating device 1 to a terminal repeating device 12, a pulse trio signal generator 2 sends out a pulse trio signal modulated by a prescribed frequency to detect the level of a signal inputted to a fault detecting circuit 8, thus spotting the fault. To detect a fault position on a transmission line succeeding to the terminal repeating device 13, the generator 2 sends out a pulse trio signal modulated by, for example, frequencies f5-f8. This signal is inputted to an error pulse detecting circuit 23. When a code rule is erroneous, the circuit 23 outputs pulses showing the error to a 10<-2> measuring circuit 24. The circuit 24 counts the pulses from the circuit 23 for a specific time and when the counted value exceeds a prescribed value, the device 12 is by-passed. The terminal repeating devices 13 and 22 are the same.

Description

【発明の詳細な説明】 （１）　　発明の技術分野 本発明は、送信側の溝中装置と受信側の溝中装置を複数
の中継器で接続されているディジタル中継伝送路をタン
デム接続して成るタンデム接続回縁の障害伝送路監視方
式に係り、特に時間の短縮を図り九タンデム接続回線の
障害伝送路監視方式に関する。[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to a tandem connection of a digital relay transmission line in which a transmitting-side channel device and a receiving-side channel device are connected by a plurality of repeaters. The present invention relates to a faulty transmission line monitoring system for tandem connection circuits, and particularly relates to a faulty transmission line monitoring system for nine tandem connection lines with the aim of reducing time.

（２）技術の背景 近年１通信の分野では、各種の監視において時間の短縮
化が要求されており、タンデム接続回線の障害伝送路監
視も、その例外でなく、時間の短縮化が要求されている
。(2) Background of technology In recent years, in the field of communications, there has been a demand for time reduction in various types of monitoring, and faulty transmission line monitoring of tandem connection lines is no exception. There is.

（３）　　従来技術と問題点 第１図及び第２図を用いて、従来のタンデム接続回線の
障害伝送路監視方式を説明する。(3) Prior Art and Problems A conventional fault transmission line monitoring system for tandem connection lines will be explained using FIGS. 1 and 2.

第１図は、タンデム接続回線の一構成図である。FIG. 1 is a configuration diagram of a tandem connection line.

図において％１．１１！１．１８．２８は溝中装置％Ｓ
はパルストリオ信号発生器、８は障害検出回路、鳴乃至
７及び１４乃至１７は中継器、８乃至１１及び１８乃至
ｍｌはフィルタである。In the figure, %1.11!1.18.28 is groove device %S
8 is a pulse trio signal generator, 8 is a fault detection circuit, 8 to 7 and 14 to 17 are repeaters, and 8 to 11 and 18 to ml are filters.

第３図は溝中装置の入出力パルスを示す図である。ｌａ
）はパルストリオ信号、（ｂ）は溝中装置の出力パルス
である。FIG. 3 is a diagram showing the input and output pulses of the trenching device. la
) is the pulse trio signal, and (b) is the output pulse of the slotting device.

一般に障害伝送路の監視は、障害のあるディジタル伝送
路を予備のディジタル伝送路に切換えた後、障害のある
ディジタル伝送路の障害位置を検出する。その際、溝中
装置ｉ１のパルストリオ信号発生器２から各中継器に接
続されているフィルタが通過させる周波数で変調し九第
８図１ａ）に示すようなパルストリオ信号をディジタル
伝送路に送出する。例えば、地中装置ｌから中継器ｉの
間の伝送路に障害があったかどうかを調べる場合には、
まず、地中装置ｌのパルストリオ信号発生器Ｓから、ｆ
ｌで変調し次パルストリオ信号をディジタル伝送路に送
出する。そして、このｆ□で変調し次パルストリオ信号
は、中継器慟で再生され、この中継器４に：接続された
（ｒの周波数の信号だけを通過させるフィルタ８を通過
し、監視回線を介して地中装置ｌの障害検出回路８に入
力される。障害検出回路８では、この信号のレベルを検
出して、障害標定を行う。In general, monitoring of a faulty transmission line involves detecting the fault position of the faulty digital transmission line after switching the faulty digital transmission line to a backup digital transmission line. At this time, the pulse trio signal generator 2 of the groove converter i1 modulates the frequency passed by the filters connected to each repeater, and sends out a pulse trio signal as shown in Fig. 1a) to the digital transmission line. do. For example, when investigating whether there is a failure in the transmission path between underground equipment l and repeater i,
First, from the pulse trio signal generator S of the underground device L, f
The next pulse trio signal is modulated with l and sent to the digital transmission line. The next pulse trio signal modulated by this f The signal is input to the fault detection circuit 8 of the underground equipment 1. The fault detection circuit 8 detects the level of this signal and performs fault location.

以下、順次パルストリオ信号発生器２より、ｆ、。Hereinafter, from the sequential pulse trio signal generator 2, f.

１Ｂ、１４＊・・・・・・で変調し次ハルストリオ信号
をディジタル伝送路に送出し、所定レベルで障害検出器
３に入力しなかった中継器あるいは、四段の中継器から
次段の中継器の間で障害があることを知ることができる
。1B, 14*, etc., and sends the next Halst trio signal to the digital transmission line, and the repeater that did not input it to the fault detector 3 at a predetermined level, or from the four-stage repeater to the next-stage repeater. You can know that there is an obstacle between vessels.

しかし、第１図に示すようなタンデム接続回縁で地中装
置１８から地中装置ＳＳ以降のディジタル伝送路の障害
位置を検出する場合には地中装置ｌのパルストリオ信号
発生器２からｆ５・ｆ６・ｆ７゜ｆ、・・・・・・で変
調したパルストリオ信号を送出しても地中装置１１で復
号化され、地中装置１８で符号化されてしまうため、地
中装置１８の出力は第２図１四に示すパルス信号として
出力されてしまう。However, when detecting the fault position of the digital transmission path from the underground device 18 to the underground device SS in a tandem connection circuit as shown in FIG.・Even if a pulse trio signal modulated with f6, f7°f, ... is sent, it will be decoded by the underground device 11 and encoded by the underground device 18, so The output is output as a pulse signal shown in FIG. 14.

このため、従来のタンデム接続回線の障害伝送路監視方
式は、地中装置ｌから地中装置１ｇまでのディジタル伝
送路の障害監視を行った後、人間が地中装置１８に移動
して地中装置１８かダ地中装置２Ｓまでのディジタル伝
送路の障害監視を行うという方法であり念。すなわち、
従来のタンデム接続回縁の障害伝送路監視方式では、入
間の移動する時間のむだがあり、不便なものであっ九。For this reason, in the conventional tandem connection line fault transmission line monitoring method, after monitoring the fault in the digital transmission line from underground equipment 1 to underground equipment 1g, a person moves to underground equipment 18 and This is a method of monitoring failures in the digital transmission line from equipment 18 to underground equipment 2S. That is,
The conventional fault transmission line monitoring method for tandem connection circuits wastes time traveling between stations and is inconvenient.

（４）発明の目的 本発明は、かかる従来の欠点を除去し、入間がパルスト
リオ信号発生器をもつ層中装置から移動することなくタ
ンデム接続回線の障害伝送路監視が行える方式を提供す
ることを目的とする。(4) Purpose of the Invention The present invention eliminates the drawbacks of the conventional art and provides a system that allows faulty transmission line monitoring of tandem connection lines without moving the Iruma from the layer equipment having the pulsed trio signal generator. With the goal.

（５）　　発明の構成 送信儒の端局中継装置と受信側の端局中継装置を複数の
中継器で接続されてなるディジタル中継伝送路をタンデ
ム接続して成るタンデム接続回線の障害伝送路監視方式
において、該端局中継装置に入力するパルス信号の誤シ
を検出する誤９検出手段を設け、誤り車が所定値以上忙
なったとき該端局中継装置をバイパスさせる手段を虜け
たことを特徴とするものである。(5) Structure of the Invention Faulty transmission line monitoring method for a tandem connection line formed by tandemly connecting a digital relay transmission line in which a transmitting end station relay device and a receiving side end station relay device are connected by a plurality of repeaters. The present invention is characterized in that an error detection means for detecting an error in the pulse signal input to the terminal relay device is provided, and means for bypassing the terminal relay device when the erroneous vehicle becomes busy by a predetermined value or more is provided. That is.

（６）発明の実施例 第３図を用いて本発明のタンデム接続回縁の障害伝送路
監視方式を詳説する０ 第３図、本発明のタンデム接続回着の障害伝送路監視方
式の一構成図である０図において、第１図と同一の番号
を付した装置は、同一の装置を示す。また、！ａ、！６
及び２フは誤りパルス検出回路、１１４．１６及びｚ８
は１Ｏ−１測定回ｊｌ　’ｔ”　Ｉｈ　ル。(6) Embodiments of the Invention The method for monitoring faulty transmission lines in tandem connections of the present invention will be explained in detail with reference to FIG. 3. FIG. In FIG. 0, devices given the same numbers as in FIG. 1 indicate the same devices. Also,! a,! 6
and 2F are error pulse detection circuits, 114.16 and z8
is 10-1 measurement times.

パルストリオ信号は、ディジタル伝送方式に用いられる
バイポーラ符号則ははずれ几パルス列で構成されており
、そのバイポーラ符号則に対する符号誤り率は１０−３
以上の性質をもっているものである。この１０−３以上
の符号誤シ車を検出する回路が、Ｘｏ−Ｓ測定回路であ
る。The pulse trio signal is composed of a pulse train that does not comply with the bipolar coding rule used in digital transmission systems, and the code error rate with respect to the bipolar coding rule is 10-3.
It has the above properties. The circuit that detects the code errors of 10-3 or more is the Xo-S measurement circuit.

地中装置ｌから、地中装置ＩＢｔでのディジタル伝送路
の障害位置を検出する場合には、従来のタンデム接続回
線の障害伝送路監視方式で説明した様に１パルストリオ
信号発生器から所定の周波数で変調したパルストリオ信
号を送出して、障害検出回路８に入力される信号のレベ
ルを検出して障害標定を行う。When detecting the location of a fault in the digital transmission line from underground equipment I to underground equipment IBt, a predetermined signal is sent from the one-pulse trio signal generator as explained in the conventional fault transmission line monitoring system for tandem connection lines. A frequency-modulated pulse trio signal is sent out, and the level of the signal input to the fault detection circuit 8 is detected to locate the fault.

地中装置１８以降の伝送路の障害位置を検出する場合に
は、例えばｆ５ｓｆ＠、、　ｆ７＋ｆ４”’・・・で変
調したパルストリオ信号をパルストリオ信号発生器ｚよ
り送出される。こ（７）ｆ、、ｆ、、ｆ、、ｆ、−・・
・・で変調したパルストリオ信号は、ｔず誤りパルス検
出回路ｚ８に入力される。誤りパルス検出回路ｚ８では
、バイポーラ符号則と入力するパルストリオ信号とを比
較し、符号則か誤っている場合に、誤りを示すパルスを
１０−”測定回路ｇ４ｉＣ出力する。When detecting the location of a fault in the transmission path after the underground device 18, a pulse trio signal modulated by f5sf@, f7+f4''... is sent out from the pulse trio signal generator z. ) f,, f,, f,, f, --...
The pulse trio signal modulated by ... is input to the error pulse detection circuit z8. The error pulse detection circuit z8 compares the bipolar code rule with the input pulse trio signal, and if the code rule is incorrect, outputs a pulse indicating an error to the 10-'' measurement circuit g4iC.

１０”測定回路Ｓ４では、誤りパルス検出回路ｚ８から
のパルスを所定時間カウントし、そのカウント値が所定
値以上（すなわち、１０−１以上）になったとき、層中
装置１ｍをバイパスさせる信号を層中装置１ｉに出力す
る。層中装置１３では１０−１測定回路ｚ４からの信号
により、層中装置１ｇをバイパスさせる回ＩＩＩ／ｃ接
続する０以後、層中装置１８及び層中装置ＳＳ＜おいて
も、それぞれ１０−８測定回路Ｓ６及びＳｓからの信号
によシパイバスさせる〇 すなわち、上記で説明したよ５＜、−＜ルストリオ信号
は、バイポーラ符号則に比らべ１Ｏ−３の符号誤り率を
持つものであるから、パルストリオ信号が送出され九と
きには、層中装置１２．１１１及びＳｓが必然的にバイ
パスされる。よって層中装置ｌのパルストリオ信号Ｓか
らｆ＠＋ｆ６＋ｆ７＋ｆｇ・・・で変調したパルストリ
オ信号を送出することにより、地中装置Ｉｓ以降のディ
ジタル伝送路の障害標定を行うことができる。The 10" measurement circuit S4 counts the pulses from the error pulse detection circuit z8 for a predetermined period of time, and when the count value exceeds a predetermined value (i.e., 10-1 or more), it outputs a signal that bypasses the interlayer device 1m. Output to the layer device 1i.In the layer device 13, the signal from the 10-1 measurement circuit z4 bypasses the layer device 1g.After connecting III/c, the layer device 18 and the layer device SS< In other words, the signal from the 10-8 measurement circuits S6 and Ss is used as the signal bus, respectively. In other words, as explained above, the 5<, -< Rustrio signal has a code error of 1O-3 compared to the bipolar code rule. Therefore, when the pulse trio signal is sent out, the interlayer devices 12, 111 and Ss are inevitably bypassed.Therefore, from the pulse trio signal S of the interlayer device I, f@+f6+f7+fg... By transmitting the pulse trio signal modulated by , it is possible to locate faults in the digital transmission line after the underground device Is.

ｔた、ここでは送信系について説明し友が、受信系につ
いても全く同じことである。Although the transmitting system will be explained here, the same applies to the receiving system.

（７）発明の効果 以上の説明から明らかな如く、層中装置ｌのパルストリ
オ信号発生器Ｓから通常のディジタル伝送路の障害標定
を行うパルス）　ＩＪオ信号を送出するだけでタンデム
接続回線の監視を行うこと力１が′ でき１人間ｆ次段の地中装量に移動することもないので
、従来のタンデム接続回線の障害伝送路監視方式に比ら
べ、時間の短縮を図ることができる。(7) Effects of the Invention As is clear from the above explanation, the pulse trio signal generator S of the intra-layer device 1 can easily connect the tandem connection line by simply sending out the pulse (IJ) signal for fault location of the normal digital transmission line. Since only one person can perform the monitoring and there is no need to move to the next stage underground, the time can be reduced compared to the conventional fault transmission line monitoring method for tandem connection lines. can.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はタンデム接続回線の一構成因、第４図は層中装
置の入出力パルスを示す図、第８図は本発明のタンデム
接続回線の障害伝送路監視方式の一構成図である。 図中、１．１２．１８及びｓ２は層中装置％　８はパル
ストリオ信号発生器、８は障害検出回路、４乃至７及び
１４乃至１７は中継器、８乃至１１及び１８乃至２１は
フィルタ、Ｂ　８　ｅ　ＩＢＳ及び２７Ｈ誤りパルス検
出回路、ｗ　４　ｍ　２６及びｓ８は１　ｏ−＊測定回
路である。FIG. 1 is a diagram showing a configuration of a tandem connection line, FIG. 4 is a diagram showing input/output pulses of an intermediate device, and FIG. 8 is a configuration diagram of a failure transmission line monitoring system for a tandem connection line according to the present invention. In the figure, 1, 12, 18 and s2 are device percentages in the layer, 8 is a pulse trio signal generator, 8 is a fault detection circuit, 4 to 7 and 14 to 17 are repeaters, 8 to 11 and 18 to 21 are filters, B 8 e IBS and 27H error pulse detection circuit, w 4 m 26 and s8 are 1 o-* measurement circuits.

Claims (1)

【特許請求の範囲】[Claims] 送信側の端局中継装置と受信側の端局中継装置を複数の
中継器で接続されてなるデジタル中継伝送路をタンデム
接続して成るタンデム接続回線の障害伝送路監視方式に
おいて、該端局中継装置に入力するパルス信号の誤り検
出手段を設け、誤り事が所定値以上になり九とき、該端
局中継装置をバイパスさせる手段を設けたことを特徴と
するタンデム接続回線の障害伝送路監視方式。In a failure transmission line monitoring method for a tandem connection line in which a digital relay transmission line is connected in tandem by connecting a terminal station relay device on the transmitting side and a terminal station relay device on the receiving side by a plurality of repeaters, the terminal station relay device A faulty transmission line monitoring system for a tandem connection line, characterized in that a means for detecting errors in pulse signals input to the device is provided, and means for bypassing the terminal relay device when the error exceeds a predetermined value. .
JP56213675A 1981-12-29 1981-12-29 Monitoring system of fault transmission line of tandem connection circuit Pending JPS58116843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56213675A JPS58116843A (en) 1981-12-29 1981-12-29 Monitoring system of fault transmission line of tandem connection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56213675A JPS58116843A (en) 1981-12-29 1981-12-29 Monitoring system of fault transmission line of tandem connection circuit

Publications (1)

Publication Number Publication Date
JPS58116843A true JPS58116843A (en) 1983-07-12

Family

ID=16643103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56213675A Pending JPS58116843A (en) 1981-12-29 1981-12-29 Monitoring system of fault transmission line of tandem connection circuit

Country Status (1)

Country Link
JP (1) JPS58116843A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100380263B1 (en) * 1999-09-07 2003-04-16 루센트 테크놀러지스 인크 A synchronous hierarchic network system and a method of transmitting data therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100380263B1 (en) * 1999-09-07 2003-04-16 루센트 테크놀러지스 인크 A synchronous hierarchic network system and a method of transmitting data therein

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