JPS62217793A - 局線インタ−フエ−ス回路 - Google Patents

局線インタ−フエ−ス回路

Info

Publication number
JPS62217793A
JPS62217793A JP5958086A JP5958086A JPS62217793A JP S62217793 A JPS62217793 A JP S62217793A JP 5958086 A JP5958086 A JP 5958086A JP 5958086 A JP5958086 A JP 5958086A JP S62217793 A JPS62217793 A JP S62217793A
Authority
JP
Japan
Prior art keywords
circuit
loop
photocoupler
current
polarity
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
JP5958086A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0428197B2 (enrdf_load_stackoverflow
Inventor
Masaya Kuwano
桑野　雅也
Yoichiro Sano
佐野　陽一郎
Hiroyuki Ogawa
裕之 小川
Teruyuki Kubo
久保　輝幸
Masaji Muranaka
村中　正次
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.)
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Iwatsu Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Iwatsu Electric Co Ltd
Priority to JP5958086A priority Critical patent/JPS62217793A/ja
Publication of JPS62217793A publication Critical patent/JPS62217793A/ja
Publication of JPH0428197B2 publication Critical patent/JPH0428197B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
JP5958086A 1986-03-19 1986-03-19 局線インタ−フエ−ス回路 Granted JPS62217793A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5958086A JPS62217793A (ja) 1986-03-19 1986-03-19 局線インタ−フエ−ス回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5958086A JPS62217793A (ja) 1986-03-19 1986-03-19 局線インタ−フエ−ス回路

Publications (2)

Publication Number Publication Date
JPS62217793A true JPS62217793A (ja) 1987-09-25
JPH0428197B2 JPH0428197B2 (enrdf_load_stackoverflow) 1992-05-13

Family

ID=13117308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5958086A Granted JPS62217793A (ja) 1986-03-19 1986-03-19 局線インタ−フエ−ス回路

Country Status (1)

Country Link
JP (1) JPS62217793A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0428197B2 (enrdf_load_stackoverflow) 1992-05-13

Similar Documents

Publication Publication Date Title
US4118603A (en) DC signaling circuit for use in conjunction with isolation transformers
JPH0453474B2 (enrdf_load_stackoverflow)
JPS6277727A (ja) コ−ドレス電話機用回線切替回路
US4558183A (en) Opto-coupler interfacing circuit
US4150260A (en) Subscriber's circuit for four-wire-system local switch
JP2758088B2 (ja) ボタン電話用インタフェース装置
US5717752A (en) Data access arrangement
JPS6251018B2 (enrdf_load_stackoverflow)
JPS62217793A (ja) 局線インタ−フエ−ス回路
US4660219A (en) Extension ringing arrangement key telephone system
JPS62217792A (ja) 極性反転検出回路
JPS62241493A (ja) ル−プ検出回路
JPH0767131B2 (ja) 網制御回路
JPS62241494A (ja) 極性反転検出回路
JPS60178762A (ja) 選択着信方式
JPS6259500B2 (enrdf_load_stackoverflow)
JPH0444476B2 (enrdf_load_stackoverflow)
IE55828B1 (en) Telephone exchange
JPS62217791A (ja) 極性反転検出回路
KR930006985Y1 (ko) 레스폰다 자동절환회로
JPH0342836B2 (enrdf_load_stackoverflow)
JP2742845B2 (ja) 加入者回線試験方式
JPS62217755A (ja) ダイヤルパルス送出回路
JPS63151157A (ja) ドアホン接続装置
JPS6358420B2 (enrdf_load_stackoverflow)