JPS63121946U - - Google Patents
Info
- Publication number
- JPS63121946U JPS63121946U JP1223087U JP1223087U JPS63121946U JP S63121946 U JPS63121946 U JP S63121946U JP 1223087 U JP1223087 U JP 1223087U JP 1223087 U JP1223087 U JP 1223087U JP S63121946 U JPS63121946 U JP S63121946U
- Authority
- JP
- Japan
- Prior art keywords
- telephone line
- busy
- voltage
- detects
- lines
- 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 1
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1223087U JPS63121946U (enExample) | 1987-01-30 | 1987-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1223087U JPS63121946U (enExample) | 1987-01-30 | 1987-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63121946U true JPS63121946U (enExample) | 1988-08-08 |
Family
ID=30800165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1223087U Pending JPS63121946U (enExample) | 1987-01-30 | 1987-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121946U (enExample) |
-
1987
- 1987-01-30 JP JP1223087U patent/JPS63121946U/ja active Pending
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