JPH0631800Y2 - インターホンの呼出回路 - Google Patents
インターホンの呼出回路Info
- Publication number
- JPH0631800Y2 JPH0631800Y2 JP12603088U JP12603088U JPH0631800Y2 JP H0631800 Y2 JPH0631800 Y2 JP H0631800Y2 JP 12603088 U JP12603088 U JP 12603088U JP 12603088 U JP12603088 U JP 12603088U JP H0631800 Y2 JPH0631800 Y2 JP H0631800Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- ringing
- alarm
- output
- 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.)
- Expired - Lifetime
Links
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12603088U JPH0631800Y2 (ja) | 1988-09-27 | 1988-09-27 | インターホンの呼出回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12603088U JPH0631800Y2 (ja) | 1988-09-27 | 1988-09-27 | インターホンの呼出回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0246456U JPH0246456U (ar) | 1990-03-29 |
JPH0631800Y2 true JPH0631800Y2 (ja) | 1994-08-22 |
Family
ID=31377168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12603088U Expired - Lifetime JPH0631800Y2 (ja) | 1988-09-27 | 1988-09-27 | インターホンの呼出回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0631800Y2 (ar) |
-
1988
- 1988-09-27 JP JP12603088U patent/JPH0631800Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0246456U (ar) | 1990-03-29 |
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