JPS61124178U - - Google Patents
Info
- Publication number
- JPS61124178U JPS61124178U JP635385U JP635385U JPS61124178U JP S61124178 U JPS61124178 U JP S61124178U JP 635385 U JP635385 U JP 635385U JP 635385 U JP635385 U JP 635385U JP S61124178 U JPS61124178 U JP S61124178U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- main power
- communication lines
- line
- 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 7
- 238000010586 diagram Methods 0.000 description 1
Description
図は本考案の実施例を示す回路図である。
２……外線、３１〜３ｎ……通話線、４１〜４
ｎ……ＴＥＬ（標準電話機）、１１……ＤＢ（全
波整流回路）、１４１〜１４ｎ……ＬＰＤ（ルー
プ検出回路）、１５……ＣＮＴ（制御回路）、１
９……ＰＳ（電源回路）、ＰＦ……リレー（停電
検出用）、Ａ〜Ｎ……リレー（外線内線切替用）
、ｐｆ１〜ｐｆ３，ａ１，ａ２〜ｎ１，ｎ２……
接点、ＡＣ……主電源。
The figure is a circuit diagram showing an embodiment of the present invention. 2...Outside line, 3 1 to 3 n ...Talking line, 4 1 to 4
n ...TEL (standard telephone), 11...DB (full wave rectifier circuit), 14 1 to 14 n ...LPD (loop detection circuit), 15...CNT (control circuit), 1
9...PS (power supply circuit), PF...Relay (for power outage detection), A~N...Relay (for external line extension switching)
, pf 1 to pf 3 , a 1 , a 2 to n 1 , n 2 ...
Contact, AC...main power supply.
Claims (1)
機を各々１対の通話線を介して収容し、前記各通
話線のループ検出およびダイヤルパルス検出を有
極性のループ検出回路によつて行ない、前記外線
と各標準電話機との間および前記各標準電話機相
互間の外線および内線交換接続を行なう簡易交換
装置において、前記外線の線間電圧極性を前記ル
ープ検出回路の極性と一致する極性とする全波整
流回路と、主電源の通電時に動作し前記全波整流
回路を外線に対して挿入しかつ前記主電源の停電
時に復旧して前記全波整流回路を外線から除外す
る停電検出用のリレーと、前記主電源の通電に応
じて動作し前記各通話線を内線回路側へ接続しか
つ前記主電源の停電時および前記外線との通話時
に復旧し、前記各通話線を外線側へ接続する外線
内線切替用のリレーとを備えたことを特徴とする
簡易交換装置。 One outside line is accommodated, and a plurality of standard telephones are each accommodated through a pair of communication lines, and loop detection and dial pulse detection of each of the communication lines is performed by a polar loop detection circuit; and each standard telephone, and between each standard telephone, a full-wave rectifier for making the line voltage polarity of the external line coincide with the polarity of the loop detection circuit. a circuit, a power failure detection relay that operates when the main power supply is energized to insert the full-wave rectifier circuit to the outside line, and restores when the main power supply fails to exclude the full-wave rectifier circuit from the outside line; An external line extension switch that operates in response to energization of the main power supply, connects each of the above-mentioned communication lines to the extension circuit side, and restores when the main power supply fails or when a call is made to the above-mentioned external line, and connects each of the above-mentioned communication lines to the external line side. A simple exchange device characterized by being equipped with a relay for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP635385U JPS61124178U (en) | 1985-01-21 | 1985-01-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP635385U JPS61124178U (en) | 1985-01-21 | 1985-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61124178U true JPS61124178U (en) | 1986-08-05 |
Family
ID=30483716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP635385U Pending JPS61124178U (en) | 1985-01-21 | 1985-01-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61124178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01168192A (en) * | 1987-12-23 | 1989-07-03 | Matsushita Electric Works Ltd | Telephone exchange |
-
1985
- 1985-01-21 JP JP635385U patent/JPS61124178U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01168192A (en) * | 1987-12-23 | 1989-07-03 | Matsushita Electric Works Ltd | Telephone exchange |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61124178U (en) | ||
| JPS5811087Y2 (en) | Multi-line protection device for answering machine | |
| JPS60108079U (en) | Power outage incoming circuit for telephone equipment | |
| JPS643246Y2 (en) | ||
| JPH0230949Y2 (en) | ||
| JPS62127187U (en) | ||
| JPS5920751U (en) | telephone equipment | |
| JPS6295364U (en) | ||
| JPS6077155U (en) | Telephone incoming call detection circuit | |
| JPS6017058U (en) | dial sending circuit | |
| JPS62147951U (en) | ||
| JPS60145757U (en) | Phone hold circuit | |
| JPH03130650U (en) | ||
| JPS6035669U (en) | Pseudo call generator | |
| JPS6184134A (en) | Line switching system | |
| JPS6421553U (en) | ||
| JPS6066158U (en) | telephone switching device | |
| JPH0382989U (en) | ||
| JPH01172756U (en) | ||
| JPS63164561A (en) | Telephone terminal equipment for power failure | |
| JPH0462505B2 (en) | ||
| JPS60816U (en) | Disconnection trip coil disconnection monitoring device | |
| JPS6281869A (en) | Power saving circuit for key telephone system | |
| JPS60149293U (en) | Office line extension switching circuit for button telephone equipment | |
| JPS5970073A (en) | Power supply device for telephone set at power failure |