JPH0354451Y2 - - Google Patents
Info
- Publication number
- JPH0354451Y2 JPH0354451Y2 JP1985200860U JP20086085U JPH0354451Y2 JP H0354451 Y2 JPH0354451 Y2 JP H0354451Y2 JP 1985200860 U JP1985200860 U JP 1985200860U JP 20086085 U JP20086085 U JP 20086085U JP H0354451 Y2 JPH0354451 Y2 JP H0354451Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- signal line
- telephone
- handset
- 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 35
- 238000004891 communication Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Prepayment Telephone Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985200860U JPH0354451Y2 (ko) | 1985-12-27 | 1985-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985200860U JPH0354451Y2 (ko) | 1985-12-27 | 1985-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62112246U JPS62112246U (ko) | 1987-07-17 |
| JPH0354451Y2 true JPH0354451Y2 (ko) | 1991-12-02 |
Family
ID=31163772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985200860U Expired JPH0354451Y2 (ko) | 1985-12-27 | 1985-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0354451Y2 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2738722B2 (ja) * | 1988-11-18 | 1998-04-08 | 松下電器産業株式会社 | 送受器装着検出回路 |
-
1985
- 1985-12-27 JP JP1985200860U patent/JPH0354451Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62112246U (ko) | 1987-07-17 |
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