JPH0444787U - - Google Patents

Info

Publication number
JPH0444787U
JPH0444787U JP8649590U JP8649590U JPH0444787U JP H0444787 U JPH0444787 U JP H0444787U JP 8649590 U JP8649590 U JP 8649590U JP 8649590 U JP8649590 U JP 8649590U JP H0444787 U JPH0444787 U JP H0444787U
Authority
JP
Japan
Prior art keywords
telephone
line
switch
call
sound source
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.)
Granted
Application number
JP8649590U
Other languages
English (en)
Other versions
JP2518651Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8649590U priority Critical patent/JP2518651Y2/ja
Publication of JPH0444787U publication Critical patent/JPH0444787U/ja
Application granted granted Critical
Publication of JP2518651Y2 publication Critical patent/JP2518651Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Description

【図面の簡単な説明】
図面は本考案の実施例の回路図である。 主な記号、１……電話システム、２……単独電
話機、３……ドアホン、１０２……抵抗、１０３
……トランス、１０５……チヤイム音源、１０６
……スイツチ、１０８……ドアホン回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 単独電話機が収容し得るようにされた電話シ
    ステムに於いて、上記単独電話機が接続される通
    話線の片線に２次巻線が挿入され、該２次巻線側
    が巻線自体で、又は他の回路素子との並列接続で
    低インピーダンスとされたトランスと、音源と、
    上記トランスの１次巻線と音源との間に挿入され
    、上記単独電話機が接続された回線以外の回線に
    着信が生起したときに導通して音源からの信号音
    を上記通話線に重畳させるように動作するスイツ
    チで構成された通話中の単独電話機への着信音送
    出回路。 ２ ドアホンが収容される電話システムであつて
    、スイツチがドアホン回線への着信によつて導通
    するスイツチである請求項１に記載の通話中の単
    独電話機への着信音送出回路。
JP8649590U 1990-08-17 1990-08-17 通話中の単独電話機への着信音送出回路 Expired - Lifetime JP2518651Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8649590U JP2518651Y2 (ja) 1990-08-17 1990-08-17 通話中の単独電話機への着信音送出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8649590U JP2518651Y2 (ja) 1990-08-17 1990-08-17 通話中の単独電話機への着信音送出回路

Publications (2)

Publication Number Publication Date
JPH0444787U true JPH0444787U (ja) 1992-04-16
JP2518651Y2 JP2518651Y2 (ja) 1996-11-27

Family

ID=31818192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8649590U Expired - Lifetime JP2518651Y2 (ja) 1990-08-17 1990-08-17 通話中の単独電話機への着信音送出回路

Country Status (1)

Country Link
JP (1) JP2518651Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63125090U (ja) * 1987-02-06 1988-08-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63125090U (ja) * 1987-02-06 1988-08-15

Also Published As

Publication number Publication date
JP2518651Y2 (ja) 1996-11-27

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