JPH03187529A - Transmission line switching system - Google Patents
Transmission line switching systemInfo
- Publication number
- JPH03187529A JPH03187529A JP32691589A JP32691589A JPH03187529A JP H03187529 A JPH03187529 A JP H03187529A JP 32691589 A JP32691589 A JP 32691589A JP 32691589 A JP32691589 A JP 32691589A JP H03187529 A JPH03187529 A JP H03187529A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- side switching
- transmission
- switching unit
- working
- 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 title claims abstract description 77
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は１つの予備伝送路と複数の現用伝送路とを有す
る通信装置の伝送路切替方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmission line switching system for a communication device having one protection transmission line and a plurality of working transmission lines.
第２図は従来の伝送路切替方式の一例のブロック図であ
る。FIG. 2 is a block diagram of an example of a conventional transmission line switching system.
予備伝送路２１とこの予備伝送路２１に切替を行う送信
側切替部２２と受信側切替部２３および現用伝送路２４
．２７と現用伝送路２４．２７の切替を行う送信側切替
部２５．２８と受信側切替部２６．２９とを有して構成
され、予備伝送路２１と現用伝送路２４．２７の送信側
切替部２２゜２５．２８にはハイブリッドトランス３０
を使用している。A backup transmission line 21, a transmission side switching unit 22 that switches to this backup transmission line 21, a reception side switching unit 23, and a working transmission line 24.
．． 27 and the working transmission line 24.27, and a receiving side switching unit 26.29. Part 22゜25.28 has a hybrid transformer 30
are using.
次に、動作について説明すると、切替を行っていない状
態においては、予備伝送路２１では矢印の伝送経路３１
により通信を行い、現用伝送路２４．２７では、矢印の
伝送経路３２．３３により通信を行う、現用伝送路２７
に障害が発生した場合には、現用伝送路２７の送信側切
替部２８と受信側切替部２９と予備伝送路２１の送信側
切替部２２と受信側切替部２３において全ての切替器が
動作し矢印の伝送経路３４により信号の伝送を行う。Next, to explain the operation, in a state where switching is not performed, the backup transmission path 21 is connected to the transmission path 31 indicated by the arrow.
In the working transmission line 24.27, the working transmission line 27 communicates by the transmission path 32.33 indicated by the arrow.
If a failure occurs in the transmitting side switching unit 28 and receiving side switching unit 29 of the working transmission line 27 and the transmitting side switching unit 22 and receiving side switching unit 23 of the protection transmission line 21, all the switching devices operate. Signals are transmitted through the transmission path 34 indicated by the arrow.
上述した従来の伝送路切替方式では、予備伝送路に送信
側切替部と受信側切替部とを有しているため、伝送路の
切替動作に関する信頼性の低下と、すべての送信側切替
部にハイブリッド・トランスを使用しているため、伝送
信号が減衰するという欠点がある。In the conventional transmission line switching method described above, since the backup transmission line has a transmitting side switching unit and a receiving side switching unit, there is a decrease in reliability regarding the transmission line switching operation, and there is a problem that all transmitting side switching units Since it uses a hybrid transformer, it has the disadvantage that the transmitted signal is attenuated.
本発明の伝送路切替方式は、信号を伝送する予備伝送路
と、入出力端からの信号を伝送する複数の現用伝送路と
、この現用伝送路と前記入出力端とに接続する送信側及
び受信側の切替部とを備え、前記現用伝送路が通信障害
のとき前記入出力端からの信号を前記予備伝送路により
伝送することを特徴とする。The transmission line switching system of the present invention includes a backup transmission line for transmitting signals, a plurality of working transmission lines for transmitting signals from input/output ends, and a transmission side and and a switching section on the receiving side, and the signal from the input/output end is transmitted through the backup transmission path when there is a communication failure in the working transmission path.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
複数の現用伝送路２．５はそれぞれ送信側切替部３．６
と受信側切替部４，７との各スイッチａを介して入出力
部１０Ａ、ＩＯＢ及びＩＩＡ。Each of the plurality of working transmission lines 2.5 has a transmission side switching unit 3.6.
and the input/output sections 10A, IOB, and IIA via the respective switches a of the receiving side switching sections 4 and 7.
１１Ｂが接続される。予備伝送路１は送信切替部３．６
及び受信切替部４．７のスイッチｂを介して入出力端１
２Ａと１２Ｂが接続される。11B is connected. The backup transmission line 1 is the transmission switching unit 3.6
and input/output terminal 1 via switch b of reception switching section 4.7.
2A and 12B are connected.
現用伝送路５に障害が発生した場合には送信側および受
信側の切替部３，４，５．６のスイッチａまたはｂを切
替える、すなわち、入力出端１１Ａは送信側の切替部６
のスイッチａ、送信切替部３のスイッチｂ、予備伝送路
１．受信側の切替部４のスイッチｂ、及び受信側切替部
７のスイッチｂを介して入出力端１１Ｂに接続される。When a failure occurs in the current transmission line 5, switches a or b of the switching units 3, 4, 5.6 on the transmitting side and the receiving side are switched, that is, the input output end 11A is switched to the switching unit 6 on the transmitting side.
switch a of the transmission switching section 3, switch b of the transmission switching section 3, and the backup transmission line 1. It is connected to the input/output terminal 11B via the switch b of the receiving side switching unit 4 and the switch b of the receiving side switching unit 7.
また、現用伝送路２に障害が発生した場合には、送信側
切替部３のスイッチａと受信側切替部４のスイッチｂと
を切替えて、入出力端１０Ａは予備伝送路１を介して入
出力端１０に接続される。In addition, if a failure occurs in the working transmission line 2, switch a of the transmitting side switching unit 3 and switch b of the receiving side switching unit 4 are switched, and the input/output end 10A is input via the backup transmission line 1. It is connected to the output end 10.
このようにすると、予備伝送路１には切替部を備えず、
現用伝送路２，５のみに送信側切替部３．６と受信側切
替部４．７を有し、送信側切替部３．６はスイッチａ、
ｂのみで構成される。切替を行っていない状態において
は予備伝送路１と現用伝送路２，５とにより通信を行う
。現用伝送路２．ｔたは５に障害が発生した場合には現
用伝送路２または５の送信側切替部３または６と受信側
切替部４または７のスイッチａ、ｂが動作し、予備送経
路ｌを介して通信を行うことができる。In this way, the backup transmission line 1 is not equipped with a switching section,
Only the active transmission lines 2 and 5 have a transmitting side switching unit 3.6 and a receiving side switching unit 4.7, and the transmitting side switching unit 3.6 includes a switch a,
It consists only of b. In a state where switching is not performed, communication is performed through the protection transmission line 1 and the working transmission lines 2 and 5. Current transmission line 2. If a failure occurs in transmission line t or 5, switches a and b of transmitting side switching unit 3 or 6 and receiving side switching unit 4 or 7 of working transmission line 2 or 5 operate, and the transmission is transmitted via protection transmission path l. Can communicate.
以上説明したように本発明は、現用伝送路にのみ送信側
切替部と受信側切替部を有し、すべての送信側切替部を
スイッチのみで構成することにより、予備伝送路に切替
部を備えていないため切替部の数が減少し、伝送路の切
替動作に関する信頼性が向上する効果と、送信側切替部
にハイブリッドトランスを使用しないためこのハイブリ
ッドトランスによる伝送信号の減衰を少くする効果があ
る。As explained above, the present invention has a transmitting side switching unit and a receiving side switching unit only on the working transmission line, and by configuring all the transmitting side switching units only with switches, the protection transmission line has a switching unit. This has the effect of reducing the number of switching parts and improving the reliability of the switching operation of the transmission line, and since no hybrid transformer is used in the transmission side switching part, it has the effect of reducing the attenuation of the transmitted signal due to the hybrid transformer. .
第１図は本発明の一実施例のブロック図、第２図は従来
の伝送路切替方式の一例のブロック図である。
１．２１・・・予備伝送路、２，５，２４．２７・・・
現用伝送路、３．６，２２，２５．２８・・・送信側切
替部、４，７．２３，２６．２９・・・受信側切替部、
３０・・・ハイブリッドトランス。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of an example of a conventional transmission line switching system. 1.21...protection transmission line, 2,5,24.27...
Working transmission line, 3.6, 22, 25.28... Transmission side switching unit, 4, 7.23, 26.29... Receiving side switching unit,
30...Hybrid transformer.
Claims (1)
送する複数の現用伝送路と、この現用伝送路と前記入出
力端とに接続する送信側及び受信側の切替部とを備え、
前記現用伝送路が通信障害のとき前記入出力端からの信
号を前記予備伝送路により伝送することを特徴とする伝
送路切替方式。comprising a backup transmission line for transmitting signals, a plurality of working transmission lines for transmitting signals from input/output ends, and switching units on the transmitting side and receiving side connected to the working transmission line and the input/output ends,
A transmission line switching system characterized in that when there is a communication failure in the working transmission line, a signal from the input/output end is transmitted through the protection transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32691589A JPH03187529A (en) | 1989-12-15 | 1989-12-15 | Transmission line switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32691589A JPH03187529A (en) | 1989-12-15 | 1989-12-15 | Transmission line switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03187529A true JPH03187529A (en) | 1991-08-15 |
Family
ID=18193178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32691589A Pending JPH03187529A (en) | 1989-12-15 | 1989-12-15 | Transmission line switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03187529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6418115B1 (en) | 1997-10-08 | 2002-07-09 | Fujitsu Limited | Exchange for changing a route of a transmission path to bypass a malfunctioning switch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62196934A (en) * | 1986-02-24 | 1987-08-31 | Nec Corp | Optical fiber switching system |
| JPS6478529A (en) * | 1987-09-19 | 1989-03-24 | Fujitsu Ltd | Line switching device |
-
1989
- 1989-12-15 JP JP32691589A patent/JPH03187529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62196934A (en) * | 1986-02-24 | 1987-08-31 | Nec Corp | Optical fiber switching system |
| JPS6478529A (en) * | 1987-09-19 | 1989-03-24 | Fujitsu Ltd | Line switching device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6418115B1 (en) | 1997-10-08 | 2002-07-09 | Fujitsu Limited | Exchange for changing a route of a transmission path to bypass a malfunctioning switch |
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