JPS61101149A - 電話機 - Google Patents

電話機

Info

Publication number
JPS61101149A
JPS61101149A JP59222100A JP22210084A JPS61101149A JP S61101149 A JPS61101149 A JP S61101149A JP 59222100 A JP59222100 A JP 59222100A JP 22210084 A JP22210084 A JP 22210084A JP S61101149 A JPS61101149 A JP S61101149A
Authority
JP
Japan
Prior art keywords
circuit
transistor
signal
power supply
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.)
Granted
Application number
JP59222100A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0553097B2 (enExample
Inventor
Masami Iizuka
正美 飯塚
Yasuo Nagai
康夫 永井
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP59222100A priority Critical patent/JPS61101149A/ja
Publication of JPS61101149A publication Critical patent/JPS61101149A/ja
Publication of JPH0553097B2 publication Critical patent/JPH0553097B2/ja
Granted legal-status Critical Current

Links

JP59222100A 1984-10-24 1984-10-24 電話機 Granted JPS61101149A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59222100A JPS61101149A (ja) 1984-10-24 1984-10-24 電話機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59222100A JPS61101149A (ja) 1984-10-24 1984-10-24 電話機

Publications (2)

Publication Number Publication Date
JPS61101149A true JPS61101149A (ja) 1986-05-20
JPH0553097B2 JPH0553097B2 (enExample) 1993-08-09

Family

ID=16777134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59222100A Granted JPS61101149A (ja) 1984-10-24 1984-10-24 電話機

Country Status (1)

Country Link
JP (1) JPS61101149A (enExample)

Also Published As

Publication number Publication date
JPH0553097B2 (enExample) 1993-08-09

Similar Documents

Publication Publication Date Title
US4496799A (en) Handsfree telephone instrument using digital dial
EP0030739B1 (en) Circuit for storing the energy of an applied signal for use in a telephone annunciator
JPS61224548A (ja) 電話機
EP0225069A2 (en) Telephone power supply
JPH1075529A (ja) 電話線のインターフェイスの過電圧に対する保護
US6252957B1 (en) Low power line selection circuit for a telephone
JPH0666827B2 (ja) 電話機インタフェイス
JP2575464B2 (ja) 過電圧保護手段を含む電話器回路
JPS61101149A (ja) 電話機
JPS6298947A (ja) 電話機
US6940970B2 (en) Ring boost circuit to extend ringing range of telephone SLICs
KR890004369Y1 (ko) 톤, 펄스 겸용다이얼 송출회로
US5442695A (en) Ringer circuit
CA1209291A (en) Subscriber's telephone circuit
CA1209292A (en) Subscriber's telephone circuit
JP2555646B2 (ja) 電話保留音送出装置
KR910002633B1 (ko) 정전 대피 통화기능을 갖는 시스템형 전화기
KR940001493Y1 (ko) 분기된 전화기를 이용한 멜로디홀드 자동 해제회로
JP2538927Y2 (ja) 電話機装置
JPH03145851A (ja) ダイヤル回路
CN2214057Y (zh) 电话线路防盗器
RU2014743C1 (ru) Устройство посылки вызова
EP1128654B1 (en) A telephone
JPS62203448A (ja) 呼出回路
JPS6351624B2 (enExample)