JPH06197044A - Transmitter - Google Patents
TransmitterInfo
- Publication number
- JPH06197044A JPH06197044A JP34380392A JP34380392A JPH06197044A JP H06197044 A JPH06197044 A JP H06197044A JP 34380392 A JP34380392 A JP 34380392A JP 34380392 A JP34380392 A JP 34380392A JP H06197044 A JPH06197044 A JP H06197044A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transmission
- transmission circuit
- signal
- alarm
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は予備伝送路及び予備伝送
装置を有し、障害発生時に予備側に切替える伝送装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission device having a backup transmission line and a backup transmission device, and switching to the backup side when a failure occurs.
【０００２】[0002]
【従来の技術】従来の予備伝送路及び予備伝送装置を有
する伝送装置においては、障害が発生した場合、障害を
検出した伝送装置は予備側に切替えを行うとともに、対
向する伝送装置には主信号に監視警報ビットを付与して
送信する。これにより対向する伝送装置は、この監視警
報ビットの障害情報により予備側に切替えを行ってい
る。従来の切替方式としては、例えば「情報通信ネット
ワークシステム（１９８９年 電気通信協会発行）の２
０９頁から２１３頁及び２８４頁から２８８頁に記載さ
れている。2. Description of the Related Art In a conventional transmission apparatus having a backup transmission line and a backup transmission apparatus, when a failure occurs, the transmission apparatus that has detected the failure switches to the backup side and the opposite transmission apparatus receives a main signal. The monitor alarm bit is added to and transmitted. As a result, the opposing transmission device switches to the protection side according to the failure information of this monitoring alarm bit. As a conventional switching method, for example, "2 of Information Communication Network System (issued by the Telecommunications Association of 1989)"
09 to 213 and 284 to 288.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述の監視警
報ビットによる切替え方式では、監視警報ビットの送出
及び抽出制御が複雑となるという問題点がある。However, the above-mentioned switching method by the monitoring alarm bit has a problem that the sending and extraction control of the monitoring alarm bit becomes complicated.
【０００４】本発明の目的は、監視警報ビットを送受す
ることなく切替えを行う簡易な切替え方式の伝送装置を
提供することにある。An object of the present invention is to provide a transmission device of a simple switching system for switching without transmitting / receiving a monitoring alarm bit.
【０００５】[0005]
【課題を解決するための手段】上記目的は、障害が発生
した場合に送信側の出力を停止することにより対向する
伝送装置にも障害を検出させることにより達成される。The above object can be achieved by stopping the output of the transmitting side when a failure occurs so that the opposite transmission device also detects the failure.
【０００６】[0006]
【作用】障害が発生した場合、障害を検出した伝送装置
は、自装置のみの障害情報で予備側に切替える。それと
ともに送信側の出力を停止することにより、対向する伝
送装置では障害（入力信号断）が検出されるため、対向
する伝送装置も自装置のみの障害情報（入力信号断）で
予備側に切替わる。When a failure occurs, the transmission device that has detected the failure switches to the spare side using the failure information of its own device. At the same time, by stopping the output on the transmitting side, a failure (input signal loss) is detected at the opposite transmission device, so the opposite transmission device is also switched to the standby side with the failure information (input signal loss) of its own device. Change
【０００７】[0007]
【実施例】図１に本発明を適用した伝送装置の一実施例
を示す。伝送回路１，２，５，６は図２に示すように、
信号を送信する送信回路９と信号を受信する受信回路１
０と受信側の警報（例えば、同期はずれや入力信号断）
を検出する警報検出回路１１より構成され、前記送信回
路９は前記警報検出回路１１よりの警報信号により送信
出力を停止する機能を有している。FIG. 1 shows an embodiment of a transmission device to which the present invention is applied. The transmission circuits 1, 2, 5, 6 are, as shown in FIG.
Transmitting circuit 9 for transmitting signals and receiving circuit 1 for receiving signals
0 and alarm on the receiving side (for example, loss of synchronization or disconnection of input signal)
The alarm circuit 11 has a function of stopping the transmission output by the alarm signal from the alarm detection circuit 11.
【０００８】また、切替制御回路４及び８は前記伝送回
路１，２及び５，６内の警報信号により選択回路３及び
７の信号選択を制御する。The switching control circuits 4 and 8 control the signal selection of the selection circuits 3 and 7 by the alarm signals in the transmission circuits 1, 2, 5 and 6.
【０００９】なお、図１において伝送回路１は運用側
で、伝送回路２は予備側、伝送回路５は前記伝送回路１
に対向する運用側で、伝送回路６は前記伝送回路２に対
向する予備側である。In FIG. 1, the transmission circuit 1 is on the operating side, the transmission circuit 2 is on the standby side, and the transmission circuit 5 is on the transmission circuit 1 side.
The transmission circuit 6 is the backup side facing the transmission circuit 2 on the working side.
【００１０】ここで、図１の伝送装置の動作を説明す
る。通常の運用状態ではいずれの伝送回路１，２，５，
６においても障害警報の検出がないため、切替制御回路
４は選択回路３が伝送回路１の信号を選択するように制
御に、切替制御回路８は選択回路７が伝送回路５の信号
を選択するように制御する。この状態において、例えば
伝送回路５内の警報検出回路１１で、障害が検出された
場合、切替制御回路８は前記警報検出回路１１よりの警
報信号により選択回路７を制御し信号選択を伝送回路５
の運用側から伝送回路６の予備側に切替えるとともに前
記伝送回路５内の送信回路９は前記警報検出回路１１よ
りの警報信号により送信出力を停止する。このため前記
伝送回路５に対向している伝送回路１では入力信号断と
なり、前記伝送回路１内の警報検出回路１１で障害（入
力信号断）が検出され、切替制御回路４は前記警報検出
回路１１よりの警報信号により選択回路３を制御し信号
選択を伝送回路１の運用側から伝送回路２の予備側に切
替える。The operation of the transmission device shown in FIG. 1 will be described. Under normal operating conditions, which transmission circuit 1, 2, 5,
Since no fault alarm is detected in 6 as well, the switching control circuit 4 controls the selection circuit 3 to select the signal of the transmission circuit 1, and the switching control circuit 8 selects the signal of the transmission circuit 5 by the selection circuit 7. To control. In this state, for example, when a failure is detected by the alarm detection circuit 11 in the transmission circuit 5, the switching control circuit 8 controls the selection circuit 7 by the alarm signal from the alarm detection circuit 11 to select the signal.
And the transmission circuit 9 in the transmission circuit 5 stops the transmission output by the alarm signal from the alarm detection circuit 11. Therefore, the transmission circuit 1 facing the transmission circuit 5 has an input signal disconnection, and the alarm detection circuit 11 in the transmission circuit 1 detects a failure (input signal disconnection). The alarm circuit 11 controls the selection circuit 3 to switch the signal selection from the operating side of the transmission circuit 1 to the backup side of the transmission circuit 2.
【００１１】[0011]
【発明の効果】本発明によれば、自装置のみの障害情報
で予備側への切替えができるため、監視警報ビットを送
受することなく、また監視警報ビットの送出及び抽出制
御が不要となり切替えを簡易にしかも確実に行える効果
がある。According to the present invention, since it is possible to switch to the spare side only by the fault information of the own device, it is possible to switch without sending and receiving the monitoring alarm bit and without the need for sending and extracting the monitoring alarm bit. The effect is simple and reliable.
【図１】本発明の一実施例を示す伝送装置の構成図であ
る。FIG. 1 is a configuration diagram of a transmission device according to an embodiment of the present invention.
【図２】図１の伝送回路の概要を示す構成図である。FIG. 2 is a configuration diagram showing an outline of the transmission circuit of FIG.
１，２，５，６…伝送回路、３，７…選択回路、４，８
…切替制御回路、９…送信回路、１０…受信回路、１１
…警報検出回路。1, 2, 5, 6 ... Transmission circuit, 3, 7 ... Selection circuit, 4, 8
... switching control circuit, 9 ... transmission circuit, 10 ... reception circuit, 11
... alarm detection circuit.
Claims (1)
側の伝送装置で障害が発生した場合に前記予備伝送路及
び予備伝送装置に切替える伝送システムにおいて、障害
が発生した場合に送信側の出力を停止することにより、
自装置のみの障害情報で前記予備伝送路及び予備伝送装
置に切替えることを特徴とする伝送装置。1. In a transmission system having a backup transmission line and a backup transmission device, and switching to the backup transmission line and the backup transmission device when a failure occurs in the transmission device on the operating side, the transmission side when a failure occurs. By stopping the output of
A transmission device, wherein switching is performed to the backup transmission line and the backup transmission device based on failure information of only the device itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34380392A JPH06197044A (en) | 1992-12-24 | 1992-12-24 | Transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34380392A JPH06197044A (en) | 1992-12-24 | 1992-12-24 | Transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06197044A true JPH06197044A (en) | 1994-07-15 |
Family
ID=18364359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34380392A Pending JPH06197044A (en) | 1992-12-24 | 1992-12-24 | Transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06197044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7372804B2 (en) | 2002-01-11 | 2008-05-13 | Nec Corporation | Multiplex communication system and method |
-
1992
- 1992-12-24 JP JP34380392A patent/JPH06197044A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7372804B2 (en) | 2002-01-11 | 2008-05-13 | Nec Corporation | Multiplex communication system and method |
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