JPH071870Y2 - 光中継器の警報指示信号送出回路 - Google Patents
光中継器の警報指示信号送出回路Info
- Publication number
- JPH071870Y2 JPH071870Y2 JP1987043078U JP4307887U JPH071870Y2 JP H071870 Y2 JPH071870 Y2 JP H071870Y2 JP 1987043078 U JP1987043078 U JP 1987043078U JP 4307887 U JP4307887 U JP 4307887U JP H071870 Y2 JPH071870 Y2 JP H071870Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical
- alarm
- optical transmitter
- potential
- 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.)
- Expired - Lifetime
Links
Landscapes
- Dc Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Optical Communication System (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987043078U JPH071870Y2 (ja) | 1987-03-24 | 1987-03-24 | 光中継器の警報指示信号送出回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987043078U JPH071870Y2 (ja) | 1987-03-24 | 1987-03-24 | 光中継器の警報指示信号送出回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63152331U JPS63152331U (US07922777-20110412-C00004.png) | 1988-10-06 |
JPH071870Y2 true JPH071870Y2 (ja) | 1995-01-18 |
Family
ID=30859596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987043078U Expired - Lifetime JPH071870Y2 (ja) | 1987-03-24 | 1987-03-24 | 光中継器の警報指示信号送出回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH071870Y2 (US07922777-20110412-C00004.png) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4516739B2 (ja) * | 2003-12-05 | 2010-08-04 | 富士通株式会社 | 光伝送装置および光伝送システム |
JP4586653B2 (ja) * | 2005-07-01 | 2010-11-24 | 日本電気株式会社 | 光伝送装置及び該光伝送装置に用いられる障害情報伝送方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60148255A (ja) * | 1984-01-12 | 1985-08-05 | Mitsubishi Electric Corp | 安全装置 |
JPS61202547A (ja) * | 1985-03-06 | 1986-09-08 | Fujitsu Ltd | 中継器の余裕度監視方式 |
-
1987
- 1987-03-24 JP JP1987043078U patent/JPH071870Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS63152331U (US07922777-20110412-C00004.png) | 1988-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0494695B1 (en) | Loop mode transmission system with bus mode backup and a method of maintaining continuity thereof | |
JPH071870Y2 (ja) | 光中継器の警報指示信号送出回路 | |
CN111934900A (zh) | 一种通过调制器切换中频的应急系统和方法 | |
JPH088519B2 (ja) | 負荷制御システム | |
GB2226202A (en) | Optical transmission device | |
JPS63221725A (ja) | 光伝送方式 | |
JPS5821251Y2 (ja) | 二重化方式デ−タ伝送装置 | |
KR200317560Y1 (ko) | 이중화된 아이피씨링크 보드내의 액티브 감시회로ㅛ | |
JPS6338902B2 (US07922777-20110412-C00004.png) | ||
JP2800018B2 (ja) | ベースバンドネットワークシステム | |
JP2509584B2 (ja) | 配電系統の遠方監視装置 | |
JPS5950142B2 (ja) | 環状光通信装置 | |
JPS57106289A (en) | Abnormality corresponding method on catv system | |
JPS61156928A (ja) | 通信回線の自動切替方式 | |
JP2506232B2 (ja) | デ―タ伝送装置 | |
JPS616934A (ja) | 予備システム監視方式 | |
JPH03128544A (ja) | 通信ネットワークシステム | |
JPS6335020A (ja) | 多重伝送システム | |
KR19990061879A (ko) | 사설 교환유닛간 접속 링크 절체방법 | |
JP3636916B2 (ja) | 光加入者システム及びその監視方法 | |
JPS59176937A (ja) | 光中継伝送路監視方式 | |
JPS63125024A (ja) | 監視制御通信装置 | |
JPS6141248A (ja) | ポ−リング方式遠方監視制御装置 | |
JPH01221928A (ja) | 現用・予備システム切替方式 | |
JPS63283236A (ja) | 装置予備切替方式 |