JPH0351541U - - Google Patents
Info
- Publication number
- JPH0351541U JPH0351541U JP11188989U JP11188989U JPH0351541U JP H0351541 U JPH0351541 U JP H0351541U JP 11188989 U JP11188989 U JP 11188989U JP 11188989 U JP11188989 U JP 11188989U JP H0351541 U JPH0351541 U JP H0351541U
- Authority
- JP
- Japan
- Prior art keywords
- doorbell
- call
- outside line
- handset
- hold tone
- 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 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11188989U JPH0351541U (zh) | 1989-09-25 | 1989-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11188989U JPH0351541U (zh) | 1989-09-25 | 1989-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351541U true JPH0351541U (zh) | 1991-05-20 |
Family
ID=31660351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11188989U Pending JPH0351541U (zh) | 1989-09-25 | 1989-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351541U (zh) |
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1989
- 1989-09-25 JP JP11188989U patent/JPH0351541U/ja active Pending