JPS63131256U - - Google Patents
Info
- Publication number
- JPS63131256U JPS63131256U JP1763287U JP1763287U JPS63131256U JP S63131256 U JPS63131256 U JP S63131256U JP 1763287 U JP1763287 U JP 1763287U JP 1763287 U JP1763287 U JP 1763287U JP S63131256 U JPS63131256 U JP S63131256U
- Authority
- JP
- Japan
- Prior art keywords
- ringing signal
- telephone
- detection unit
- signal detection
- telephone 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1763287U JPS63131256U (fr) | 1987-02-09 | 1987-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1763287U JPS63131256U (fr) | 1987-02-09 | 1987-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63131256U true JPS63131256U (fr) | 1988-08-26 |
Family
ID=30810566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1763287U Pending JPS63131256U (fr) | 1987-02-09 | 1987-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63131256U (fr) |
-
1987
- 1987-02-09 JP JP1763287U patent/JPS63131256U/ja active Pending