JPH0450712Y2 - - Google Patents
Info
- Publication number
- JPH0450712Y2 JPH0450712Y2 JP1990111117U JP11111790U JPH0450712Y2 JP H0450712 Y2 JPH0450712 Y2 JP H0450712Y2 JP 1990111117 U JP1990111117 U JP 1990111117U JP 11111790 U JP11111790 U JP 11111790U JP H0450712 Y2 JPH0450712 Y2 JP H0450712Y2
- Authority
- JP
- Japan
- Prior art keywords
- hook
- office line
- telephone
- central office
- line
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000004397 blinking Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111117U JPH0450712Y2 (US20020051482A1-20020502-M00012.png) | 1990-10-25 | 1990-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990111117U JPH0450712Y2 (US20020051482A1-20020502-M00012.png) | 1990-10-25 | 1990-10-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0377575U JPH0377575U (US20020051482A1-20020502-M00012.png) | 1991-08-05 |
| JPH0450712Y2 true JPH0450712Y2 (US20020051482A1-20020502-M00012.png) | 1992-11-30 |
Family
ID=31659614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990111117U Expired JPH0450712Y2 (US20020051482A1-20020502-M00012.png) | 1990-10-25 | 1990-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450712Y2 (US20020051482A1-20020502-M00012.png) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140352A (en) * | 1979-04-20 | 1980-11-01 | Iwatsu Electric Co Ltd | Speaker telephone set connecting system |
| JPS5683167A (en) * | 1979-12-12 | 1981-07-07 | Kanda Tsushin Kogyo Kk | Line lamp control system for button telephone device |
-
1990
- 1990-10-25 JP JP1990111117U patent/JPH0450712Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55140352A (en) * | 1979-04-20 | 1980-11-01 | Iwatsu Electric Co Ltd | Speaker telephone set connecting system |
| JPS5683167A (en) * | 1979-12-12 | 1981-07-07 | Kanda Tsushin Kogyo Kk | Line lamp control system for button telephone device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0377575U (US20020051482A1-20020502-M00012.png) | 1991-08-05 |
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