JPH0332851U - - Google Patents
Info
- Publication number
- JPH0332851U JPH0332851U JP9253889U JP9253889U JPH0332851U JP H0332851 U JPH0332851 U JP H0332851U JP 9253889 U JP9253889 U JP 9253889U JP 9253889 U JP9253889 U JP 9253889U JP H0332851 U JPH0332851 U JP H0332851U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- detection
- voltage
- calling
- rectifying
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092538U JPH0753321Y2 (ja) | 1989-08-08 | 1989-08-08 | 呼出信号検出回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989092538U JPH0753321Y2 (ja) | 1989-08-08 | 1989-08-08 | 呼出信号検出回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332851U true JPH0332851U (enExample) | 1991-03-29 |
| JPH0753321Y2 JPH0753321Y2 (ja) | 1995-12-06 |
Family
ID=31641959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989092538U Expired - Lifetime JPH0753321Y2 (ja) | 1989-08-08 | 1989-08-08 | 呼出信号検出回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753321Y2 (enExample) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58116849A (ja) * | 1981-12-29 | 1983-07-12 | Toshiba Corp | 電話機のインタフエ−ス回路 |
| JPS63151144A (ja) * | 1986-12-15 | 1988-06-23 | Matsushita Electric Ind Co Ltd | 着信検出装置 |
-
1989
- 1989-08-08 JP JP1989092538U patent/JPH0753321Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58116849A (ja) * | 1981-12-29 | 1983-07-12 | Toshiba Corp | 電話機のインタフエ−ス回路 |
| JPS63151144A (ja) * | 1986-12-15 | 1988-06-23 | Matsushita Electric Ind Co Ltd | 着信検出装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0753321Y2 (ja) | 1995-12-06 |