JPH0224309Y2 - - Google Patents
Info
- Publication number
- JPH0224309Y2 JPH0224309Y2 JP15166883U JP15166883U JPH0224309Y2 JP H0224309 Y2 JPH0224309 Y2 JP H0224309Y2 JP 15166883 U JP15166883 U JP 15166883U JP 15166883 U JP15166883 U JP 15166883U JP H0224309 Y2 JPH0224309 Y2 JP H0224309Y2
- Authority
- JP
- Japan
- Prior art keywords
- office line
- incoming call
- extension telephone
- circuit
- call signal
- 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
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15166883U JPS6059688U (ja) | 1983-09-30 | 1983-09-30 | 小形簡易交換電話装置の局線着信呼出制御回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15166883U JPS6059688U (ja) | 1983-09-30 | 1983-09-30 | 小形簡易交換電話装置の局線着信呼出制御回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6059688U JPS6059688U (ja) | 1985-04-25 |
JPH0224309Y2 true JPH0224309Y2 (zh) | 1990-07-03 |
Family
ID=30336032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15166883U Granted JPS6059688U (ja) | 1983-09-30 | 1983-09-30 | 小形簡易交換電話装置の局線着信呼出制御回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6059688U (zh) |
-
1983
- 1983-09-30 JP JP15166883U patent/JPS6059688U/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6059688U (ja) | 1985-04-25 |
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