JPH0326123A - Terminal station repeater - Google Patents
Terminal station repeaterInfo
- Publication number
- JPH0326123A JPH0326123A JP16129589A JP16129589A JPH0326123A JP H0326123 A JPH0326123 A JP H0326123A JP 16129589 A JP16129589 A JP 16129589A JP 16129589 A JP16129589 A JP 16129589A JP H0326123 A JPH0326123 A JP H0326123A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- transmission path
- parity bit
- parity
- monitoring
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 230000005856 abnormality Effects 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims description 30
- 238000000605 extraction Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ディジタル通信装置に利用する。特に、端局
中継装置の監視情報転送手段に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to a digital communication device. In particular, the present invention relates to monitoring information transfer means for a terminal relay device.
本発明は、端局中継装置の監視情報転送手段において、
装置内障害を示す情報としてパリティビットの極性を反
転することにより、
ベイロードの伝送効率を高めることができるようにした
ものである。The present invention enables bayload transmission efficiency to be increased by reversing the polarity of a parity bit as information indicating an internal failure in a monitoring information transfer means of a terminal relay device.
送信側端局中継装置内で自己監視（主信号フレームの空
き、タイムスロットを用いたパスバタンチェック、エラ
スティックストアメモリパリティチェックなどの監視〉
の結果が対向する端局中継装置に通知されると、たとえ
ば、切替決定権をもつ受信側が通知内容に応じて伝送路
のプロテクションを行う。すなわち、第３図に示すよう
に、受信側の端局中継装置１は伝送路の状態や自局受信
側装置内の自己監視の結果などを見て現用伝送路３１、
３２および３３から予備伝送路３０に切替えるか否かの
判断を行うが、この判断に際して送信側装置内の自己監
視結果を加味するためにこの監視結果情報が通知される
必要がある。Self-monitoring within the transmitting end station relay device (monitoring of main signal frame vacancies, pass button checks using time slots, elastic store memory parity checks, etc.)
When the result is notified to the opposing terminal relay device, for example, the receiving side that has the right to decide on switching protects the transmission path according to the contents of the notification. That is, as shown in FIG. 3, the terminal relay device 1 on the receiving side checks the status of the transmission path and the results of self-monitoring within its own receiving side device, and switches the current transmission path 31,
32 and 33 to determine whether or not to switch to the protection transmission line 30, but in order to take into consideration the self-monitoring results within the transmitting side device in making this decision, it is necessary to notify this monitoring result information.
従来例では、第４図に示すように、主信号フレーム内に
監視情報転送用オーバーヘッドＡを確保して情報伝達が
行われていた。In the conventional example, as shown in FIG. 4, information was transmitted by securing an overhead A for transferring monitoring information within the main signal frame.
このような従来例では、フレーム内に専用のオーバーヘ
ッドを確保しているので、ベイロード（一般情報ビット
）の伝送効率が低くなる欠点がある。また、オーバーヘ
ッドをフレーム内に確保できない場合には、送信側装置
内異常を加味した切替を行うことが不可能になる欠点が
ある。In such a conventional example, since a dedicated overhead is secured within the frame, there is a drawback that the transmission efficiency of the bayload (general information bits) is low. Furthermore, if overhead cannot be secured within the frame, there is a drawback that it becomes impossible to perform switching that takes into account abnormalities within the transmitting device.
本発明は、このような欠点を除去するもので、ペイロー
ドの伝送効率の低下を招かずに送信側装置内異常情報を
転送できる端局中継装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks, and to provide a terminal relay device that can transfer abnormality information within a transmitting device without causing a decrease in payload transmission efficiency.
本発明は、現用伝送路および予備伝送路のひとつを選択
して前段の端局中継装置に自装置を接続する伝送路選択
手段と、自装置の異常を検出する検出手段と、伝送路監
視用バリティピットを含むデータフレームを送出する送
出手段と、到来するデータフレームから伝送路監視用パ
リティビットを抽出する抽出手段とを備えた端局中継装
置において、上記検出手段が自装置の異常を検出したと
きに上記送出手段から送出されるデータフレームに含ま
れる伝送路監視用パリティビットの極性を反転する反転
手段と、上記抽出手段で抽出された伝送路監視用パリテ
ィビットの極性を判定する判定手段と、この判定手段の
判定結果に応じて上記伝送路選択手段を起動させる制御
手段とを備えたことを特徴とする。The present invention provides transmission path selection means for selecting one of a working transmission path and a backup transmission path and connecting the own device to a previous terminal relay device, a detection means for detecting an abnormality in the own device, and a transmission path monitoring device. In a terminal relay device comprising a sending means for sending a data frame including a parity pit, and an extraction means for extracting a parity bit for transmission path monitoring from an incoming data frame, the detecting means detects an abnormality in the own device. an inverting means for inverting the polarity of the transmission line monitoring parity bit included in the data frame sent from the sending means when the transmission line monitoring parity bit is extracted by the extraction means; and a determining means for determining the polarity of the transmission line monitoring parity bit extracted by the extraction means. and a control means for activating the transmission path selection means in accordance with the determination result of the determination means.
送信側の端局中継装置内の異常が発生すると、伝送路監
視用パリティビットの極性を反転させ、対向する端局中
継装置に通知する。これにより、対向する端局中継装置
は送信側の異常を加味したプロテクションを実行するこ
とができる。When an abnormality occurs in the terminal relay device on the transmitting side, the polarity of the transmission path monitoring parity bit is reversed and the opposite terminal relay device is notified. This allows the opposing terminal relay device to perform protection that takes into account abnormalities on the transmitting side.
以下、本発明の一実施例について図面を参照して説明す
る。第１図はこの実施例の構或を示すブロック構戊図で
ある。第２図はこの実施例で用いられる主信号フレーム
の構或を示すフォマット図でる。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the structure of this embodiment. FIG. 2 is a format diagram showing the structure of the main signal frame used in this embodiment.
この実施例は、第Ｉ図に示すように、送信側の端局中継
装置１と、受信側の端局中継装置２と、端局中継装置ｌ
と端局中継装置２とを接続する現用伝送路３１、３２、
３３および予備伝送路３０とを備え、ここで、端局中継
装ｆｆｉｌは、送出手段１１と、反転手段ｌ２と、検出
手段１３とを備え、端局中継装置２は、伝送路選択手段
２１と、抽出手段２２と、判定手段２３と、制御手段２
４とを備える。予備伝送路３０および現用伝送路３１、
３２、３３のひとつを選択して前段の端局中継装置に自
装置を接続する伝送路選択手没２１と、自装置の異常を
検出する検出手段１３と、伝送路監視用パリティビット
を含むデータフレームを送出する送出手段１１と、到来
するデータフレームから伝送路監視用パリティビットを
抽出する抽出手段２２とを備え、さらに、本発明の特徴
とする手段として、検出手没１３が自装置の異常を検出
したときに退出手段１１から送出されるデータフレーム
に含まれる伝送路監視用パリティビットの極性を反転す
る反転手段１２と、抽出手段２２で抽出された伝送路監
視用バリティビットの極性を判定する判定手段２３と、
この判定手段の判定結果に応じて上記伝送路選択手段を
起動させる制御手段２４とを備える。In this embodiment, as shown in FIG.
working transmission lines 31, 32, which connect the terminal station relay device 2 and
33 and a backup transmission line 30, where the terminal station relay device ffil includes a sending means 11, an inverting means l2, and a detection means 13, and the terminal station relay device 2 includes a transmission path selection means 21 and a protection transmission line 30. , extraction means 22, determination means 23, and control means 2
4. A backup transmission line 30 and a working transmission line 31,
32 and 33 to connect the device to the terminal relay device at the previous stage; a detection means 13 for detecting an abnormality in the device; and data including a parity bit for monitoring the transmission path. The present invention is equipped with a sending means 11 for sending out a frame, and an extracting means 22 for extracting a parity bit for transmission path monitoring from an incoming data frame. an inverting means 12 for inverting the polarity of the transmission path monitoring parity bit included in the data frame sent from the exiting means 11 when the extraction means 22 detects the transmission path monitoring parity bit; Judgment means 23 for making a judgment;
A control means 24 is provided for activating the transmission path selection means in accordance with the determination result of the determination means.
次に、この実施例の動作を説明する。Next, the operation of this embodiment will be explained.
送信側の端局中継装置１内の自己監視結果が正常である
場合には、第２図に示す伝送路監視用のパリティビッ｝
Ｐに偶数バリティを与え、異常である場合には奇数バリ
ティを与えて主信号を伝送路に送出する。受信側の端局
中継装置２はフレーム中のバリティビッ｝Ｐをパリティ
計数し、その計数結果に基づき伝送路の状態を監視する
。このときに、偶数バリティ則、奇数パリティ則のいず
れを用いるかは適当な保護段数を設定して受信側の端局
中継装置２が独自に決定することにする。If the self-monitoring result in the terminal relay device 1 on the transmitting side is normal, the parity bit for transmission path monitoring shown in FIG.
Even parity is given to P, and if it is abnormal, odd parity is given to P and the main signal is sent to the transmission path. The terminal relay device 2 on the receiving side counts the parity bit P in the frame, and monitors the state of the transmission path based on the count result. At this time, the terminal relay device 2 on the receiving side independently determines whether to use the even parity rule or the odd parity rule by setting an appropriate number of protection stages.
この端局中継装置２で偶数バリティ則を用いるのが適切
と判断される場合には、送信側の端局中継装置■内の自
己監視結果は正常であると判断する。If it is determined that it is appropriate to use the even parity rule in this terminal relay device 2, it is determined that the self-monitoring result in the transmitting side terminal relay device (2) is normal.
一方、受信側の端局中継装置２で奇数パリティ則を用い
るのが適切と判断される場合には、送信側の端局中継装
置ｌ内の自己監視結果が異常であると判断する。On the other hand, if it is determined that it is appropriate to use the odd parity rule in the terminal relay device 2 on the receiving side, it is determined that the self-monitoring result in the terminal relay device 1 on the transmitting side is abnormal.
このように、受信側は伝送路の状態と送信側装置内の自
己監視結果の情報に加えて自局受信側の装置内自己監視
結果などの情報を総合的に見て現用伝送路から予備伝送
路へ切替えるか否かを判断する。In this way, the receiving side comprehensively considers information such as the status of the transmission path and the self-monitoring results within the transmitting side equipment, as well as the self-monitoring results within the own receiving side equipment, and performs preliminary transmission from the working transmission path. It is determined whether or not to switch to the route.
本発明は、以上説明したように、送信側装置内異常を伝
送路監視用バリティピットの極性を反転させて対向装置
に通知するので、フレーム内に監視情報転送用のオーバ
ーヘッドを確保する必要がなく、ペイロードの伝送効率
を高める効果がある。As explained above, the present invention notifies the opposing device of an abnormality in the transmitting device by inverting the polarity of the transmission path monitoring parity pit, so it is not necessary to secure overhead for monitoring information transfer within the frame. This has the effect of increasing payload transmission efficiency.
また、既存システムのフレーム構戒を変更することなく
送信側異常を対向装置に通知することを可能にする効果
がある。Furthermore, it is possible to notify the opposing device of an abnormality on the transmitting side without changing the frame structure of the existing system.
第１図は、本発明実施例の構或を示すブロック構或図。
第２図は、本発明実施例で用いる主信号のフレーム構或
図。
第３図は、従来例の構戊を示すブロック構戊図。
第４図は、従来例で用いる主信号のフレーム構或図。
ｌ、２・・・端局中継装置、１ｌ・・・送出手段、１２
・・・反転手段、１３・・・検出手段、２１・・・伝送
路選択手段、２２・・・抽出手段、２３・・・判定手段
、２４・・・制御手段、３０・・・予備伝送路、３１、
３２、３３・・・現用伝送路、Ｆ・・・フレーム同期ビ
ット、■・・・ペイロード、Ｐ・・・バリティビット、
Ａ・・・監視情報転送用オーバーヘッド。FIG. 1 is a block diagram showing the structure of an embodiment of the present invention. FIG. 2 is a frame structure diagram of the main signal used in the embodiment of the present invention. FIG. 3 is a block diagram showing the structure of a conventional example. FIG. 4 is a frame structure diagram of the main signal used in the conventional example. l, 2...terminal relay device, 1l...transmission means, 12
. . . Inverting means, 13 . . . Detecting means, 21 . . . Transmission path selection means, 22 . ,31,
32, 33... Working transmission line, F... Frame synchronization bit, ■... Payload, P... Parity bit,
A: Overhead for monitoring information transfer.
Claims (1)
段の端局中継装置に自装置を接続する伝送路選択手段と
、 自装置の異常を検出する検出手段と、 伝送路監視用パリティビットを含むデータフレームを送
出する送出手段と、 到来するデータフレームから伝送路監視用パリティビッ
トを抽出する抽出手段と を備えた端局中継装置において、 上記検出手段が自装置の異常を検出したときに上記送出
手段から送出されるデータフレームに含まれる伝送路監
視用パリティビットの極性を反転する反転手段と、 上記抽出手段で抽出された伝送路監視用パリティビット
の極性を判定する判定手段と、 この判定手段の判定結果に応じて上記伝送路選択手段を
起動させる制御手段と を備えたことを特徴とする端局中継装置。[Scope of Claims] 1. Transmission path selection means for selecting one of the working transmission path and the backup transmission path and connecting the own device to the preceding end station relay device; and detection means for detecting an abnormality in the own device; In a terminal relay device comprising sending means for sending out a data frame including a parity bit for transmission path monitoring, and extraction means for extracting the parity bit for transmission path monitoring from an incoming data frame, the detection means is an inverting means for inverting the polarity of a transmission line monitoring parity bit included in a data frame sent from the sending means when an abnormality is detected; and determining the polarity of the transmission line monitoring parity bit extracted by the extraction means. What is claimed is: 1. A terminal relay device comprising: determining means for determining: and controlling means for activating the transmission path selecting means in accordance with the determination result of the determining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16129589A JPH0326123A (en) | 1989-06-23 | 1989-06-23 | Terminal station repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16129589A JPH0326123A (en) | 1989-06-23 | 1989-06-23 | Terminal station repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0326123A true JPH0326123A (en) | 1991-02-04 |
Family
ID=15732395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16129589A Pending JPH0326123A (en) | 1989-06-23 | 1989-06-23 | Terminal station repeater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682472U (en) * | 1993-05-07 | 1994-11-25 | 株式会社喜多村合金製作所 | Cartridge case for single lever type mixed faucet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62214462A (en) * | 1986-03-17 | 1987-09-21 | Yokogawa Electric Corp | Parallel signal transmission equipment |
| JPS63102517A (en) * | 1986-10-20 | 1988-05-07 | Nec Corp | Transmission system for equipment fault signal |
-
1989
- 1989-06-23 JP JP16129589A patent/JPH0326123A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62214462A (en) * | 1986-03-17 | 1987-09-21 | Yokogawa Electric Corp | Parallel signal transmission equipment |
| JPS63102517A (en) * | 1986-10-20 | 1988-05-07 | Nec Corp | Transmission system for equipment fault signal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682472U (en) * | 1993-05-07 | 1994-11-25 | 株式会社喜多村合金製作所 | Cartridge case for single lever type mixed faucet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0494695B1 (en) | Loop mode transmission system with bus mode backup and a method of maintaining continuity thereof | |
| JPH0326123A (en) | Terminal station repeater | |
| JPH02122730A (en) | Signal line terminating system | |
| JPH0795235A (en) | Frame switchboard | |
| JP2503908B2 (en) | Line switching control circuit | |
| JP2000078159A (en) | Vp changeover device, connection monitor method used for it and recording medium recording its control program | |
| JP2550887B2 (en) | Line switching device | |
| JP2968684B2 (en) | Digital trunk system selection method | |
| JPH06188901A (en) | Discriminating system for asynchronous transfer mode congestion | |
| JPS6148249A (en) | Line switching device | |
| JPH07123106A (en) | Detection of abnormal point in communication system | |
| JPS63197197A (en) | Load control system | |
| JPH02278956A (en) | Monitoring system utilizing public line network | |
| JPH05259940A (en) | Control system for switching device | |
| KR20010002101A (en) | Traffic control method for signalling point of common channel signalling system | |
| JPS63246946A (en) | Fault detection system for communication equipment in loop structure network | |
| JPH01126859A (en) | Common line signal link fault processing system | |
| JP2000354047A (en) | Atm transmitter | |
| JPS63138833A (en) | Transmission equipment | |
| JPS6194434A (en) | Control system for circuit switching | |
| JPS5824256A (en) | Line circuit control system of communication controller | |
| JPH0555955A (en) | Error detection notice system | |
| JPS60245342A (en) | Ring communication bypass controlling system | |
| JPH01229526A (en) | Line switching system | |
| JPH0213034A (en) | Transmission line switching circuit |