JPH031866B2 - - Google Patents
Info
- Publication number
- JPH031866B2 JPH031866B2 JP22355082A JP22355082A JPH031866B2 JP H031866 B2 JPH031866 B2 JP H031866B2 JP 22355082 A JP22355082 A JP 22355082A JP 22355082 A JP22355082 A JP 22355082A JP H031866 B2 JPH031866 B2 JP H031866B2
- Authority
- JP
- Japan
- Prior art keywords
- intercom
- call
- unit
- lobby
- signal transmission
- 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
Links
- 230000008054 signal transmission Effects 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 32
- 238000005259 measurement Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 230000002265 prevention Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012806 monitoring device Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22355082A JPS59114958A (ja) | 1982-12-20 | 1982-12-20 | 集合住宅用インタ−ホンシステム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22355082A JPS59114958A (ja) | 1982-12-20 | 1982-12-20 | 集合住宅用インタ−ホンシステム |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59114958A JPS59114958A (ja) | 1984-07-03 |
JPH031866B2 true JPH031866B2 (zh) | 1991-01-11 |
Family
ID=16799909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22355082A Granted JPS59114958A (ja) | 1982-12-20 | 1982-12-20 | 集合住宅用インタ−ホンシステム |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59114958A (zh) |
-
1982
- 1982-12-20 JP JP22355082A patent/JPS59114958A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS59114958A (ja) | 1984-07-03 |
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