JPS6444774U - - Google Patents
Info
- Publication number
- JPS6444774U JPS6444774U JP13880287U JP13880287U JPS6444774U JP S6444774 U JPS6444774 U JP S6444774U JP 13880287 U JP13880287 U JP 13880287U JP 13880287 U JP13880287 U JP 13880287U JP S6444774 U JPS6444774 U JP S6444774U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- control
- signal
- response
- detection means
- 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 4
- 230000003213 activating effect Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13880287U JPS6444774U (zh) | 1987-09-10 | 1987-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13880287U JPS6444774U (zh) | 1987-09-10 | 1987-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6444774U true JPS6444774U (zh) | 1989-03-17 |
Family
ID=31401480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13880287U Pending JPS6444774U (zh) | 1987-09-10 | 1987-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6444774U (zh) |
-
1987
- 1987-09-10 JP JP13880287U patent/JPS6444774U/ja active Pending