JPS6266452U - - Google Patents
Info
- Publication number
- JPS6266452U JPS6266452U JP15798585U JP15798585U JPS6266452U JP S6266452 U JPS6266452 U JP S6266452U JP 15798585 U JP15798585 U JP 15798585U JP 15798585 U JP15798585 U JP 15798585U JP S6266452 U JPS6266452 U JP S6266452U
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- circuit
- hook
- hook state
- operated
- 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 4
- 238000012790 confirmation Methods 0.000 claims 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 230000004913 activation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
図は本考案の一実施例であるオンフツク状態報
知回路を表わしたブロツク図である。
主な図番の説明、１……電圧検出回路、１０…
…オンフツク検出回路、１２……保持回路、１３
……フツクリレー、１５……カツトオフ回路、１
６……リセツトスイツチ。
The figure is a block diagram showing an on-hook state notification circuit which is an embodiment of the present invention. Explanation of main drawing numbers, 1... Voltage detection circuit, 10...
...On-hook detection circuit, 12...Holding circuit, 13
...Hook relay, 15...Cut-off circuit, 1
6...Reset switch.
Claims (1)
各電話機による電話回線の電圧の変化を検出する
電圧検出回路と、該電圧検出回路が一定期間以上
のオンフツク状態を出力した時のみ動作する報知
信号発生回路と、オンフツク状態の確認のために
操作するオンフツク確認スイツチと、前記報知信
号発生回路の起動と同時に動作し始める保持回路
と、該保持回路の出力により動作するスイツチン
グ手段と、該スイツチング手段を介し電話回線に
接続される信号受信回路とよりなり、使用電話機
の前記オンフツク確認スイツチの操作を行うこと
により電話回線がオンフツク状態になると共に自
動的に回線が接続され、該使用電話機のみ通話可
能となるオンフツク状態報知回路。 A voltage detection circuit that detects changes in the voltage of the telephone line caused by each telephone in communal telephones connected in parallel to the same line, and a notification signal generation circuit that operates only when the voltage detection circuit outputs an on-hook state for a certain period or more. , an on-hook confirmation switch that is operated to confirm the on-hook state, a holding circuit that starts operating at the same time as the activation of the notification signal generation circuit, a switching means operated by the output of the holding circuit, and a telephone line via the switching means. When the on-hook confirmation switch of the telephone in use is operated, the telephone line is put into an on-hook state and the line is automatically connected to the on-hook state in which only the telephone in use can make calls. Notification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15798585U JPS6266452U (en) | 1985-10-16 | 1985-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15798585U JPS6266452U (en) | 1985-10-16 | 1985-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6266452U true JPS6266452U (en) | 1987-04-24 |
Family
ID=31081045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15798585U Pending JPS6266452U (en) | 1985-10-16 | 1985-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6266452U (en) |
-
1985
- 1985-10-16 JP JP15798585U patent/JPS6266452U/ja active Pending