JPS60109932A - Line switching system - Google Patents
Line switching systemInfo
- Publication number
- JPS60109932A JPS60109932A JP21740283A JP21740283A JPS60109932A JP S60109932 A JPS60109932 A JP S60109932A JP 21740283 A JP21740283 A JP 21740283A JP 21740283 A JP21740283 A JP 21740283A JP S60109932 A JPS60109932 A JP S60109932A
- Authority
- JP
- Japan
- Prior art keywords
- line
- protection
- switching device
- working
- signal
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（ａｌ 発明の技術分野 一
本発明は複数の現用回線並びに該現用回線が切替えられ
る少なくとも一つの予備回線を含み構成される回線の現
用予備回線切替方式に係り、予備回線を有効に利用出来
る回線切替装置に関する。DETAILED DESCRIPTION OF THE INVENTION (al) Technical Field of the Invention The present invention relates to a working protection line switching system for a line including a plurality of working lines and at least one protection line to which the working lines are switched. The present invention relates to a line switching device that can effectively utilize.
（ｂ） 技術の背景 回線予備方式について図を用いて説明する。(b) Technology background The line protection system will be explained using diagrams.
第１図は回線予備方式 伝送システムの概要を２示すブ
ロック図である。FIG. 1 is a block diagram showing an overview of a line protection transmission system.
図中１，２は回線切替装置、３，４は回線切替制御装置
、５，６はダミー信号用発振器、７−１−’１．７−１
−２．７−２−１．７−２−２．７−３−１．７−３−
２．１０−１−１．１０−１−２．．１０−２−１．１
０−２−２．１０−３−１、’１１）−３−２は端局中
継器（以下輪中と称す）、８〜１−１．８−１−２．８
−２−１．１３−２−２．８−３−１．８−３−２．９
−１−１゜９−１−２．１−２−１．９−２−２．９−
３−１．９−３−２は中継器、１１は予備回線、１２゜
１３は現用回線を示す。In the figure, 1 and 2 are line switching devices, 3 and 4 are line switching control devices, 5 and 6 are dummy signal oscillators, 7-1-'1.7-1
-2.7-2-1.7-2-2.7-3-1.7-3-
2.10-1-1.10-1-2. ．． 10-2-1.1
0-2-2.10-3-1, '11)-3-2 is a terminal repeater (hereinafter referred to as a loop), 8 to 1-1.8-1-2.8
-2-1.13-2-2.8-3-1.8-3-2.9
-1-1゜9-1-2.1-2-1.9-2-2.9-
3-1, 9-3-2 are repeaters, 11 is a protection line, and 12 and 13 are working lines.
回線切替装置１，２には、多重電話又は多重データ又は
テレビの信号が、５ＹＳＩ、５ＹＳ２−より入力してお
り通常は５ＹＳＩ、５ＹＳ２よりの信号は現用回線１２
．１３にて信号を送受している。予備回線１１．現用回
線１２．１３の下り方向には夫々錨１中７−１−１．中
継器８−１−１゜９−１−１．醋１中１０−１−１、輪
中７−２−１゜中継器８−２−１．９−２−１．輪中１
（１−２−１、鍋中７−３−１．中継器８−３−１，９
７３−１．輪中１０−３−１が挿入されており又上り方
向には夫々輪中１０−１−２．中継器９−１−２．８−
１−２．輪中７−１−２、輪中１０−２−２．中継器９
−２−２．８−２−２．輪中７−２−２、輪中１０−３
−２．中継器１−３−２゜８−３−２．醋１中７−３−
２が挿入されて中継を行っている。予備回線１１には其
の特性を世中１０−１−１及び７−１−２にてモニタす
る為に発振器５．６よりダミー信号を流している。特に
光信号を伝送する回線においては各中継器のＡＧＣの応
答特性が遅いため各中継器のＡＧＣを通常動作点に保つ
ためダミー信号を流している。Multiplex telephone, multiplex data, or television signals are input to the line switching devices 1 and 2 from 5YSI and 5YS2-, and normally signals from 5YSI and 5YS2 are sent to the working line 12.
．． Signals are sent and received at 13. Reserve line 11. In the down direction of the working lines 12 and 13, there are anchors 1, 7-1-1 and 7-1-1, respectively. Repeater 8-1-1゜9-1-1. 1 in 10-1-1, 7-2-1 in the ring 8-2-1.9-2-1. Circle 1
(1-2-1, Nabechu 7-3-1. Repeater 8-3-1, 9
73-1. The inner ring 10-3-1 is inserted, and in the upward direction, the inner ring 10-1-2. Repeater 9-1-2.8-
1-2. Wanchu 7-1-2, Wanchu 10-2-2. Repeater 9
-2-2.8-2-2. Wanchu 7-2-2, Wanchu 10-3
-2. Repeater 1-3-2゜8-3-2. 1st grade 7-3-
2 has been inserted and is relaying. A dummy signal is sent to the protection line 11 from an oscillator 5.6 in order to monitor its characteristics at the terminals 10-1-1 and 7-1-2. Particularly in lines for transmitting optical signals, since the response characteristics of the AGC of each repeater are slow, a dummy signal is sent to keep the AGC of each repeater at its normal operating point.
受信側の各輪中１０−１−１．１０−２−１゜１０−３
−１．７−１−２．７−２−２． ７−３−２には伝送
路符号誤り、受信入力断、受信装置故障等の回線異常を
検出する検出器を持っており、異常を検出すると、自局
の回線切替制御装置４゜３に知らせ、回線切替装置１，
２にて現用回線を予備回線に切替える。例えば５ＹＳＩ
の信号を送受している現用回線１２の輪中１０−２−・
１が異常を検出すると、予備回線１１の輪中１０−１−
２を含む上り回線又は該上り回線及び現用回線１２の輪
中１０−２−２を含む上り回線の余剰ビットを通して、
相手側の輪中７−１２又は輪中７−１Ｔ２及び’ｌ−２
−２を介して、回線切替制御装置°３．に現用回線１２
を予備回線１１に切替える回線切替指令を送信し、回線
切替装置１にて、５ＹＳＩの信号を予備回線１１を通し
て送受するように切替えさす。10-1-1.10-2-1°10-3 in each ring on the receiving side
-1.7-1-2.7-2-2. 7-3-2 has a detector that detects line abnormalities such as transmission line code errors, receiving input interruptions, and receiving device failures, and when an abnormality is detected, it notifies the line switching control device 4゜3 of its own station. , line switching device 1,
At step 2, the working line is switched to the protection line. For example, 5YSI
The ring 10-2- of the working line 12 transmitting and receiving the signals of
1 detects an abnormality, the backup line 11's ring 10-1-
2 or through the surplus bits of the uplink including the uplink and the ring 10-2-2 of the working line 12,
Opposite ring middle 7-12 or ring middle 7-1T2 and 'l-2
-2 via the line switching control device °3. 12 working lines
A line switching command is sent to switch the line to the protection line 11, and the line switching device 1 switches the 5YSI signal to be sent and received through the protection line 11.
切替を行うと、回線切替制御装置３は予備回線１１の輪
中７−１−１を含む下り回線の余剰ビットを通して応答
信号を回線切替制御装置４に送り回線切替装置２にてＳ
ＹＳ １の信号を予備回線１１を通して送受するよう切
替える。この切替により発振器５．６よりのダミー信号
は障害となった回線１２を通して送信されるようになり
、輪中１０−２〜１及び７−２−２ではダミー信号によ
り回線１２の障害復旧を監視する。When switching is performed, the line switching control device 3 sends a response signal to the line switching control device 4 through the surplus bits of the downlink including the ring 7-1-1 of the protection line 11, and the line switching device 2 sends a response signal to the S
The signal of YS 1 is switched to be transmitted and received through the protection line 11. Due to this switching, the dummy signal from the oscillator 5.6 is now transmitted through the faulty line 12, and the dummy signals are used in the loops 10-2 to 10-1 and 7-2-2 to monitor the fault recovery of the line 12. do.
一般的には予備回線は一回線であるが、高信頼性の為に
複数の予備回線を持うものもある。又、障害となった現
用回線が障害復旧すれば、通信を今の現用回線を使用す
るようにし、今迄通信を行っていた予、備回線を予備回
線に切戻す固定予備方式又は障害復１１１シた現用回線
を予備回線とする浮動予備方式があるが一般的には固定
予備方式が用いられている。Generally, there is one protection line, but some systems have multiple protection lines for high reliability. In addition, if the faulty working line is restored, the current working line will be used for communication, and the fixed standby method or failure recovery 111 method will be used to switch back the backup line that has been communicating until now to the backup line. Although there is a floating protection system in which the active line is used as a protection line, a fixed protection system is generally used.
（Ｃ１−従来技術と問題点 次に従来例の回線切替装置に付き図を用いて説明する。(C1-Prior art and problems Next, a conventional line switching device will be explained using the accompanying drawings.
第２図は従来例の回線切替装置を主体とした伝送システ
ム、のブロック図であり、片方向のみを示している。又
予備回線は一回線とし、又固定予備方式として説明する
。FIG. 2 is a block diagram of a transmission system based on a conventional line switching device, and only one direction is shown. In addition, the protection line is assumed to be one line, and will be explained as a fixed protection system.
図中第１図と同一機能のものは同一記号で示す。Components in the figure that have the same functions as those in FIG. 1 are indicated by the same symbols.
１−１〜１−３．２−１〜２−３は例えば水銀リレーを
用いた切替スイッチ、Ｒ１〜Ｒうは夫々同じ抵抗値の終
端抵抗を示す。1-1 to 1-3. 2-1 to 2-3 are changeover switches using, for example, mercury relays, and R1 to R each indicate a terminal resistor having the same resistance value.
第２図においては、発振器５よりのダミー信号は予備回
線１１を通して送信されており受信側の切替スイッチ２
−１内の終端抵抗Ｒ１で終端されている。In FIG. 2, the dummy signal from the oscillator 5 is transmitted through the protection line 11, and the receiving side changeover switch 2
It is terminated with a terminating resistor R1 within -1.
例えば今現用回線１２に障害が発生すると、回線切替制
御装置の制御により切替スイッチ１−１゜１＝２＋ ２
−１．２−２内の接点は実線側に切替わり、現用回線１
２のかわりに予備回線１１が使用されることになり、発
振器５よりのダミー信号は障害となった回線１２を介し
て送られるようになり、このダミー信号は輪中１０−２
−１にてモニタするようになり輪中１０−２−１の出力
側は切替スイッチ２−２内の終端抵抗Ｒ１で終端される
。For example, if a fault occurs in the current line 12, the line switching control device will control the changeover switch 1-1゜1=2+2.
-1. The contact in 2-2 switches to the solid line side, and the working line 1
The protection line 11 will be used instead of the line 10-2, and the dummy signal from the oscillator 5 will be sent via the faulty line 12.
-1, and the output side of the ring 10-2-1 is terminated at the terminating resistor R1 in the changeover switch 2-2.
障害となった回線１２の障害が復旧すれば、５Ｙ８１の
信号は再び現用回線１２を通すようになり、予備回線１
１を再度予備回線とする。予備回線１１の終端抵抗Ｒ１
は切替スイッチ２−１内にあり予備回線１１の終端は外
部には取出せなかった。When the fault in line 12 is restored, the signal of 5Y81 will be passed through the working line 12 again, and the protection line 1 will be routed again.
1 will be used as a backup line again. Terminal resistor R1 of protection line 11
was inside the changeover switch 2-1, and the termination of the protection line 11 could not be taken out to the outside.
近年通信回線はｉｎ！速化され１回線当りの値段も高価
になった。又通信回線の信頼性を向上し障害も殆んどな
くなった。この為予備回線を有効利用したい要望がある
が従来の受信側の回線切替装置２では例え予備回線１１
を使用して信号を送出しても予備回線１１の終端は切替
スイッチ２−１内の終端抵抗Ｊで終端されている為外部
には取出せなく予備回線を有効利用出来ないものであっ
た。In recent years, communication lines have become in! As speeds have increased, the price per line has also become more expensive. Also, the reliability of communication lines has been improved and failures have almost disappeared. For this reason, there is a desire to effectively use the backup line, but in the conventional receiving side line switching device 2, even if the backup line 11
Even if a signal is sent out using this, the end of the protection line 11 is terminated by the terminating resistor J in the changeover switch 2-1, so it cannot be taken out to the outside and the protection line cannot be used effectively.
これは浮動予備方式の場合も同様である・（ｄｉ 発明
の目的
本発明は−に記の欠点に鑑み為されたものであって予備
回線を信号伝送に有効に利用出来る回線切替方式の提４
ｊ、を目的とする。This is the same in the case of the floating backup system (di) Purpose of the Invention The present invention has been made in view of the drawbacks listed in -4 and proposes a line switching system that can effectively utilize the backup line for signal transmission.
j, with the aim of
ｔｅｌ 発明の構成
本発明は上記の目的を達成するために、複数の現用回線
並びに該現用回線が切替えられる少なくとも一つの予備
回線を含み構成される回線の現用予備回線切替装置にお
いて、送信側の回線切替装置では、特定の入力端子より
ダミー信号若しくは優先度の低い現用回線の信号が入力
され、該入力信号を予備回線として使用される回線に接
続するようにし、一方受信側の回線切替装置では、前記
送信側の回線切替装置と同一構成より成り、且つ前記予
備回線として使用される回線から受信された信号を特定
の受信端子に接続し、該受信端子には終端抵抗が取外し
可能に設けられて成ることを特徴とする。tel Structure of the Invention In order to achieve the above object, the present invention provides a working protection line switching device for a line including a plurality of working lines and at least one protection line to which the working lines are switched. In the switching device, a dummy signal or a signal of a working line with a low priority is inputted from a specific input terminal, and the input signal is connected to a line used as a protection line.On the other hand, in the line switching device on the receiving side, It has the same configuration as the line switching device on the transmitting side, and connects the signal received from the line used as the backup line to a specific receiving terminal, and the receiving terminal is removably provided with a terminating resistor. It is characterized by becoming.
（「）発明の実施例 以下本発明の一実施例につき図に従って説明する。(“) Examples of the invention An embodiment of the present invention will be described below with reference to the drawings.
第３図は本発明の実施例の回線切替装置を主体とした伝
送システムのブロック図であり片方向を示している。又
予備回線は一回線とし、固定子備方式として説明する。FIG. 3 is a block diagram of a transmission system based on a line switching device according to an embodiment of the present invention, and shows one direction. In addition, the protection line is assumed to be one line and will be explained as a fixed terminal system.
図中第２図と同一機能のものは同一記号で示し、２゛は
受信側の回線切替装置で送信側の回線切替装置１と同一
構成となっている。Components in the figure that have the same functions as those in FIG. 2 are indicated by the same symbols, and 2' is a line switching device on the receiving side, which has the same configuration as the line switching device 1 on the transmitting side.
２° −１〜２゛−３は切替スイ・ノチ、Ｒｏ は終端
抵抗を示す。2°-1 to 2°-3 are switching switch notches, and Ro is a terminating resistor.
第３図において、第２図と異なる点は受信側の回線切替
装置２”を送信側の回線切替装置１と同一構成とし、ダ
ミー信号を切替スイ・フチ２゛−１外に取出せるように
し、予備回線１１にはダミー信号を送ることも出来又は
予備回線１１を優先度の低い現用回線として用いること
も出来るようにした点である。In Fig. 3, the difference from Fig. 2 is that the line switching device 2'' on the receiving side has the same configuration as the line switching device 1 on the transmitting side, and the dummy signal can be taken out from the switching switch edge 2''-1. The main feature is that a dummy signal can be sent to the protection line 11, or the protection line 11 can be used as a working line with a low priority.
第３図では予備回線１１には発振器５よりダミー信号を
送り終−抵抗Ｒ０で終端している。今例えば現用回線１
２が障害となると切替スイッチ１−１．１−２．２”−
１，２” −２の接点は点線側に切替わり、現用回線１
２のかわりに予備回線１１が信号伝送に使用されること
になり、発振器５よりのダミー信号は障害となった回線
１２を介して送られるようになり、輪中１（１２−１の
出力は受信側の回線切替装置２゛外の受信端子口に数例
りられた終端抵抗Ｒ６で終端され−る。障害となった回
線１２の障害が復旧すればＳＹＳ Ｉσ倍信号再び現用
回線１２を通すようになり、予備回線１１を再度予備回
線とする。In FIG. 3, a dummy signal is sent to the protection line 11 from an oscillator 5 and terminated at a termination resistor R0. For example, working line 1
2 becomes a failure, selector switch 1-1.1-2.2"-
1, 2” -2 contacts switch to the dotted line side, working line 1
The protection line 11 will be used for signal transmission instead of the line 2, and the dummy signal from the oscillator 5 will be sent via the failed line 12, and the output of the ring 1 (12-1 will be It is terminated with a terminating resistor R6 installed at the receiving terminal outside the line switching device 2 on the receiving side.When the fault in the faulty line 12 is recovered, the SYS Iσ signal is routed through the working line 12 again. The protection line 11 is now set as a protection line again.
ここで予備回線１１を優先度の低い現用回線として用い
る場合は、送信側の回線切替装置１のダミー信号入力端
子イを送信側信号入力端子とし、受信側の回線切替装置
２″の終端抵抗Ｒ９の接続端子口を信号受信端子とする
ことで実現出来る。When the protection line 11 is used as a working line with a low priority, the dummy signal input terminal A of the line switching device 1 on the sending side is used as the signal input terminal on the sending side, and the terminating resistor R9 of the line switching device 2'' on the receiving side is used. This can be achieved by using the connection terminal port as the signal receiving terminal.
この場合受信側の回線切替装置２゛ は送信側の回線切
替装置１と同一構成であるので保守用部品の種類を減す
ることが出来る。In this case, since the line switching device 2' on the receiving side has the same configuration as the line switching device 1 on the transmitting side, the types of maintenance parts can be reduced.
以；上は片方向のみについて説明したが逆方向も同様工
あり、又以上は￥備回線は一つの場合で説明したが複数
の場合も同様であり、又°以上は固定子備方式で説明し
たが浮動予備方式の場合もダミー信号入力端子イを送信
側入力端子とし、終端抵抗Ｒ，の接続端子口を信号受信
端子とすることで同様に予備となった回線を有効利用出
来る。Above, only one direction was explained, but the same process applies in the opposite direction. Also, although the explanation above was for one ¥bi line, the same applies for multiple lines, and above is explained for the fixed terminal system. However, in the case of the floating reserve system, the spare line can be effectively utilized in the same way by using the dummy signal input terminal A as the transmitting side input terminal and using the connection terminal of the terminating resistor R as the signal receiving terminal.
（ｇｌ 発明の効果
以上詳細に説明せる如（本発明によれば、予備回線には
ダミー信号を送ることも出来又は予備回線を優先度の低
い現用回線として用いることも出来るので、予備回線の
有効利用が出来る効果がある。(gl Effects of the Invention As explained in detail above) (According to the present invention, it is possible to send a dummy signal to the protection line or use the protection line as a working line with low priority, so the protection line is effective. It has an effect that can be used.
第１図は回線予備方式伝送システムの概要を示すブロッ
ク図、第２図は従来例の回線切替装置を主体とした伝送
システムのブロック図、第３図は本発明の実施例の回線
切替装置を主体とした伝送システムのゾロツク図である
。
図中１．２．２’ は回線切替装置、３．４は回線切替
制御装置、５，６はダミー信号用発振器。
１１は予備回線、１２．１３は現用回線、１−１〜１−
３．２−１〜２−３．２’ −１〜２′ −３は切替ス
イッチ、Ｒ，、Ｒ，〜Ｒ３は終端抵抗を示す。Fig. 1 is a block diagram showing an overview of a line protection type transmission system, Fig. 2 is a block diagram of a transmission system based on a conventional line switching device, and Fig. 3 is a block diagram showing a line switching device according to an embodiment of the present invention. It is a Zoroku diagram of the transmission system based on the main body. In the figure, 1.2.2' is a line switching device, 3.4 is a line switching control device, and 5 and 6 are dummy signal oscillators. 11 is a protection line, 12.13 is a working line, 1-1 to 1-
3.2-1 to 2-3.2' -1 to 2' -3 are changeover switches, and R,, R, to R3 are terminal resistors.
Claims (1)
と−も一つの予備回線を含み構成される回線の現用予備
回線切替装置において、送信側の画線切替装置では、特
定の入力端子よりダミー信号若しくは優先度の低い現用
回線の信号が入力され、該入力（ｆ、号を予備回線とし
て使用される回線に接続するようにし、一方受信側の回
線切替装置では、前記送信側の回線切替装置と同一構成
より成り、且つ前記子（Ｉｉｉｉ ｌｉ’ｌ線として使
用される回線から受信された信号を特定の受信端子に接
続し、該受信端In a working protection line switching device for a line configured to include a plurality of working lines and at least one protection line to which the working lines are switched, the transmission side drawing line switching device outputs a dummy signal or a dummy signal from a specific input terminal. The signal of the working line with low priority is input, and the input (f) is connected to the line used as a protection line, while the line switching device on the receiving side connects the same signal as the line switching device on the transmitting side. The signal received from the line used as the child (Iiii li'l line) is connected to a specific receiving terminal, and the receiving terminal
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21740283A JPS60109932A (en) | 1983-11-18 | 1983-11-18 | Line switching system |
| CA000467452A CA1247206A (en) | 1983-11-11 | 1984-11-09 | Protection switching system for carrier transmission line |
| EP84113522A EP0142138B1 (en) | 1983-11-11 | 1984-11-09 | Protection switching system for carrier transmission line |
| DE8484113522T DE3474893D1 (en) | 1983-11-11 | 1984-11-09 | Protection switching system for carrier transmission line |
| US06/669,836 US4680776A (en) | 1983-11-11 | 1984-11-09 | Protection switching system for carrier transmission line |
| AU35311/84A AU551278B2 (en) | 1983-11-11 | 1984-11-12 | Standby line switching system |
| SG94/90A SG9490G (en) | 1983-11-11 | 1990-02-13 | Protection switching system for carrier transmission line |
| HK708/90A HK70890A (en) | 1983-11-11 | 1990-09-06 | Protection switching system for carrier transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21740283A JPS60109932A (en) | 1983-11-18 | 1983-11-18 | Line switching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60109932A true JPS60109932A (en) | 1985-06-15 |
| JPH0140535B2 JPH0140535B2 (en) | 1989-08-29 |
Family
ID=16703628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21740283A Granted JPS60109932A (en) | 1983-11-11 | 1983-11-18 | Line switching system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109932A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149132A (en) * | 1980-04-21 | 1981-11-18 | Nec Corp | Transmission system utilizing stand-by transmission line effectively |
-
1983
- 1983-11-18 JP JP21740283A patent/JPS60109932A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56149132A (en) * | 1980-04-21 | 1981-11-18 | Nec Corp | Transmission system utilizing stand-by transmission line effectively |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0140535B2 (en) | 1989-08-29 |
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