JPS619987U - Signal tone switching circuit for button telephone equipment - Google Patents
Signal tone switching circuit for button telephone equipmentInfo
- Publication number
- JPS619987U JPS619987U JP9380684U JP9380684U JPS619987U JP S619987 U JPS619987 U JP S619987U JP 9380684 U JP9380684 U JP 9380684U JP 9380684 U JP9380684 U JP 9380684U JP S619987 U JPS619987 U JP S619987U
- Authority
- JP
- Japan
- Prior art keywords
- signal tone
- switch
- switching circuit
- turned
- button telephone
- 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
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は本考案のボタン電話装置の信号切換回路の一実
施例を示すブロック図、第2図は従来のボタン電話装置
の回路構成を示すブロック図である。
1・・・ボタン電話主装置、3・・・局線ユニット、4
・・・自己保持形クロスポイント回路、5・・・内線電
話機、6・・・呼び出し音信号発生器、7・・・トラン
ス、8・・・C−MτSクロスポイント回路、9・・・
抵抗、10・・・トランス、11・・・ダイオードスイ
ッチ、12・・・ダイオード、13・・・抵抗、14・
・・コンデンサ、21・・・外部ライン、32・・・端
子。FIG. 1 is a block diagram showing an embodiment of the signal switching circuit of the button telephone device of the present invention, and FIG. 2 is a block diagram showing the circuit configuration of a conventional button telephone device. 1... Key telephone main device, 3... Office line unit, 4
...Self-holding cross point circuit, 5...Extension telephone, 6...Ring tone signal generator, 7...Transformer, 8...C-MτS cross point circuit, 9...
Resistor, 10...Transformer, 11...Diode switch, 12...Diode, 13...Resistor, 14...
...Capacitor, 21...External line, 32...Terminal.
Claims (2)
されている複数の内線電話機に切換える通話路切換スイ
ッチと、外線からの着信及び内線での呼び出しに対応す
る信号音を少なくとも発生する音源と、内線電話機と通
話路切換スイッチの間のそれぞれの通話路に直流カット
のためのトランスを介して接続され前記音源からの信号
音を内線電話機に切り換え送出する信号音切換スイッチ
とを具えたボタン電話装置において、前記トランスと前
記信号音切換スイッチの間に装置電源のオン時にオンと
なり、オフ時にオフとなるスイッチを配したことを特徴
とするボタン電話装置の信号音切換回路。(1) A call path changeover switch that switches an external line connected to the main device to a plurality of extension telephones connected to the main device, and a sound source that generates at least a signal tone corresponding to an incoming call from the external line and a call on the extension. and a signal tone changeover switch that is connected to each communication path between the extension telephone and the communication path changeover switch via a transformer for cutting direct current and switches and transmits the signal tone from the sound source to the extension telephone. 1. A signal tone switching circuit for a button telephone device, characterized in that a switch is disposed between the transformer and the signal tone changeover switch, the switch being turned on when the device is turned on and turned off when the device is turned off.
とする実用新案登録請求の範囲第(1)項記載のボタン
電話装置の信号音切換回路。(2) The signal tone switching circuit for a button telephone device according to claim (1), wherein the switch is a diode switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9380684U JPS619987U (en) | 1984-06-25 | 1984-06-25 | Signal tone switching circuit for button telephone equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9380684U JPS619987U (en) | 1984-06-25 | 1984-06-25 | Signal tone switching circuit for button telephone equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS619987U true JPS619987U (en) | 1986-01-21 |
Family
ID=30651811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9380684U Pending JPS619987U (en) | 1984-06-25 | 1984-06-25 | Signal tone switching circuit for button telephone equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS619987U (en) |
-
1984
- 1984-06-25 JP JP9380684U patent/JPS619987U/en active Pending
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