JPH01117142U - - Google Patents
Info
- Publication number
- JPH01117142U JPH01117142U JP1231588U JP1231588U JPH01117142U JP H01117142 U JPH01117142 U JP H01117142U JP 1231588 U JP1231588 U JP 1231588U JP 1231588 U JP1231588 U JP 1231588U JP H01117142 U JPH01117142 U JP H01117142U
- Authority
- JP
- Japan
- Prior art keywords
- tone
- circuit
- telephone line
- ringing
- receiving circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1231588U JPH01117142U (hr) | 1988-02-01 | 1988-02-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1231588U JPH01117142U (hr) | 1988-02-01 | 1988-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01117142U true JPH01117142U (hr) | 1989-08-08 |
Family
ID=31221650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1231588U Pending JPH01117142U (hr) | 1988-02-01 | 1988-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01117142U (hr) |
-
1988
- 1988-02-01 JP JP1231588U patent/JPH01117142U/ja active Pending
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