JPH0470837B2 - - Google Patents
Info
- Publication number
- JPH0470837B2 JPH0470837B2 JP28757587A JP28757587A JPH0470837B2 JP H0470837 B2 JPH0470837 B2 JP H0470837B2 JP 28757587 A JP28757587 A JP 28757587A JP 28757587 A JP28757587 A JP 28757587A JP H0470837 B2 JPH0470837 B2 JP H0470837B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- telephone
- fax
- voltage
- relay
- 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 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28757587A JPH01129693A (ja) | 1987-11-16 | 1987-11-16 | ボタン電話装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28757587A JPH01129693A (ja) | 1987-11-16 | 1987-11-16 | ボタン電話装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01129693A JPH01129693A (ja) | 1989-05-22 |
JPH0470837B2 true JPH0470837B2 (enrdf_load_stackoverflow) | 1992-11-12 |
Family
ID=17719099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28757587A Granted JPH01129693A (ja) | 1987-11-16 | 1987-11-16 | ボタン電話装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01129693A (enrdf_load_stackoverflow) |
-
1987
- 1987-11-16 JP JP28757587A patent/JPH01129693A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH01129693A (ja) | 1989-05-22 |
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