JPH067604Y2 - インターホンの呼出回路 - Google Patents

インターホンの呼出回路

Info

Publication number
JPH067604Y2
JPH067604Y2 JP4900889U JP4900889U JPH067604Y2 JP H067604 Y2 JPH067604 Y2 JP H067604Y2 JP 4900889 U JP4900889 U JP 4900889U JP 4900889 U JP4900889 U JP 4900889U JP H067604 Y2 JPH067604 Y2 JP H067604Y2
Authority
JP
Japan
Prior art keywords
call
circuit
electrode
light emitting
emitting diode
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 - Lifetime
Application number
JP4900889U
Other languages
English (en)
Japanese (ja)
Other versions
JPH02138948U (en]
Inventor
滋生 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aiphone Co Ltd
Original Assignee
Aiphone Co Ltd
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 by Aiphone Co Ltd filed Critical Aiphone Co Ltd
Priority to JP4900889U priority Critical patent/JPH067604Y2/ja
Publication of JPH02138948U publication Critical patent/JPH02138948U/ja
Application granted granted Critical
Publication of JPH067604Y2 publication Critical patent/JPH067604Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP4900889U 1989-04-26 1989-04-26 インターホンの呼出回路 Expired - Lifetime JPH067604Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4900889U JPH067604Y2 (ja) 1989-04-26 1989-04-26 インターホンの呼出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4900889U JPH067604Y2 (ja) 1989-04-26 1989-04-26 インターホンの呼出回路

Publications (2)

Publication Number Publication Date
JPH02138948U JPH02138948U (en]) 1990-11-20
JPH067604Y2 true JPH067604Y2 (ja) 1994-02-23

Family

ID=31566326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4900889U Expired - Lifetime JPH067604Y2 (ja) 1989-04-26 1989-04-26 インターホンの呼出回路

Country Status (1)

Country Link
JP (1) JPH067604Y2 (en])

Also Published As

Publication number Publication date
JPH02138948U (en]) 1990-11-20

Similar Documents

Publication Publication Date Title
KR940002280Y1 (ko) 송수화기 방치시의 전화기 신호수신 유지회로장치
CA2019563A1 (en) Telephone
JPH067604Y2 (ja) インターホンの呼出回路
US3961144A (en) Exclusion circuit in key telephone system
JPH0233423Y2 (en])
JPS61121594A (ja) 局線・回線インタフエ−ス回路
JPH02135850A (ja) ダイヤルパルス送出回路
JPS643248Y2 (en])
JPH089959Y2 (ja) ファクシミリ装置
KR930002040Y1 (ko) 키폰시스팀의 도아폰 인터페이스(Door Phone Interface)회로
JP2859907B2 (ja) 網制御装置
JP2506658B2 (ja) ボタン電話装置
JPS5887952A (ja) インタ−ホン装置
RU2014743C1 (ru) Устройство посылки вызова
JPS592497A (ja) ボタン電話装置における空回線選択方式
JPH089960Y2 (ja) ファクシミリ装置
JPS6369362A (ja) ナ−スコ−ルインタ−ホン
JPH089961Y2 (ja) ファクシミリ装置
JP3342609B2 (ja) 拡声型インターホン装置
JPH089963Y2 (ja) ファクシミリ装置
JPH03149945A (ja) 電話装置
JPS6349853U (en])
JPH0243886A (ja) ボタン電話装置
JPS62278856A (ja) 電話機回路
JPS5940342B2 (ja) インタ−ホン装置

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term