JPH01138198U - - Google Patents
Info
- Publication number
- JPH01138198U JPH01138198U JP3453888U JP3453888U JPH01138198U JP H01138198 U JPH01138198 U JP H01138198U JP 3453888 U JP3453888 U JP 3453888U JP 3453888 U JP3453888 U JP 3453888U JP H01138198 U JPH01138198 U JP H01138198U
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- sub
- transmission line
- transmission path
- main
- 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 description 15
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims 2
- 230000009977 dual effect Effects 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
- Selective Calling Equipment (AREA)
- Emergency Alarm Devices (AREA)
- Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3453888U JPH01138198U (US07714131-20100511-C00024.png) | 1988-03-17 | 1988-03-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3453888U JPH01138198U (US07714131-20100511-C00024.png) | 1988-03-17 | 1988-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01138198U true JPH01138198U (US07714131-20100511-C00024.png) | 1989-09-21 |
Family
ID=31261243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3453888U Pending JPH01138198U (US07714131-20100511-C00024.png) | 1988-03-17 | 1988-03-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01138198U (US07714131-20100511-C00024.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04160835A (ja) * | 1990-10-24 | 1992-06-04 | Yamatake Honeywell Co Ltd | Ｌａｎにおける２重化チャネルの異常制御方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084028A (ja) * | 1983-10-14 | 1985-05-13 | Mitsubishi Electric Corp | 通信装置 |
| JPS61131921A (ja) * | 1984-11-30 | 1986-06-19 | Nec Eng Ltd | 重要回線ダウン時の無線によるバツクアツプ方式 |
| JPS61184013A (ja) * | 1985-02-08 | 1986-08-16 | Nec Corp | 制御方式 |
| JPS6260334A (ja) * | 1985-09-11 | 1987-03-17 | Hitachi Ltd | 多重系伝送路切替方法及び装置 |
-
1988
- 1988-03-17 JP JP3453888U patent/JPH01138198U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084028A (ja) * | 1983-10-14 | 1985-05-13 | Mitsubishi Electric Corp | 通信装置 |
| JPS61131921A (ja) * | 1984-11-30 | 1986-06-19 | Nec Eng Ltd | 重要回線ダウン時の無線によるバツクアツプ方式 |
| JPS61184013A (ja) * | 1985-02-08 | 1986-08-16 | Nec Corp | 制御方式 |
| JPS6260334A (ja) * | 1985-09-11 | 1987-03-17 | Hitachi Ltd | 多重系伝送路切替方法及び装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04160835A (ja) * | 1990-10-24 | 1992-06-04 | Yamatake Honeywell Co Ltd | Ｌａｎにおける２重化チャネルの異常制御方法 |
