JPH0382957U - - Google Patents
Info
- Publication number
- JPH0382957U JPH0382957U JP14155889U JP14155889U JPH0382957U JP H0382957 U JPH0382957 U JP H0382957U JP 14155889 U JP14155889 U JP 14155889U JP 14155889 U JP14155889 U JP 14155889U JP H0382957 U JPH0382957 U JP H0382957U
- Authority
- JP
- Japan
- Prior art keywords
- call
- voice signal
- time
- telephone line
- notification device
- 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
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14155889U JPH0382957U (en]) | 1989-12-08 | 1989-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14155889U JPH0382957U (en]) | 1989-12-08 | 1989-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0382957U true JPH0382957U (en]) | 1991-08-23 |
Family
ID=31688442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14155889U Pending JPH0382957U (en]) | 1989-12-08 | 1989-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0382957U (en]) |
-
1989
- 1989-12-08 JP JP14155889U patent/JPH0382957U/ja active Pending
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