JPS5186908A - Tsushinshisutemunokanyushakairono kyudendenryokushohinogenshohoshiki - Google Patents

Tsushinshisutemunokanyushakairono kyudendenryokushohinogenshohoshiki

Info

Publication number
JPS5186908A
JPS5186908A JP15069175A JP15069175A JPS5186908A JP S5186908 A JPS5186908 A JP S5186908A JP 15069175 A JP15069175 A JP 15069175A JP 15069175 A JP15069175 A JP 15069175A JP S5186908 A JPS5186908 A JP S5186908A
Authority
JP
Japan
Prior art keywords
tsushinshisutemunokanyushakairono
kyudendenryokushohinogenshohoshiki
tsushinshisutemunokanyushakairono kyudendenryokushohinogenshohoshiki
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
JP15069175A
Other languages
English (en)
Other versions
JPS5929985B2 (ja
Inventor
Rudorufu Myuuraa Hansu
Shindoraa Hansu
Ueteigaa Peetaa
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS5186908A publication Critical patent/JPS5186908A/ja
Publication of JPS5929985B2 publication Critical patent/JPS5929985B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
JP50150691A 1974-12-23 1975-12-19 加入者回線インタ−フエイス回路 Expired JPS5929985B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1721974A CH586983A5 (ja) 1974-12-23 1974-12-23

Publications (2)

Publication Number Publication Date
JPS5186908A true JPS5186908A (ja) 1976-07-30
JPS5929985B2 JPS5929985B2 (ja) 1984-07-24

Family

ID=4423686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50150691A Expired JPS5929985B2 (ja) 1974-12-23 1975-12-19 加入者回線インタ−フエイス回路

Country Status (5)

Country Link
JP (1) JPS5929985B2 (ja)
CH (1) CH586983A5 (ja)
DE (1) DE2551916C3 (ja)
FR (1) FR2296325A1 (ja)
GB (1) GB1489143A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151307A (en) * 1978-05-19 1979-11-28 Nec Corp Supply circuit for communication current
JPS55120257A (en) * 1979-02-07 1980-09-16 Int Standard Electric Corp Automatic signal equalizer circuit
JPS5983452A (ja) * 1982-11-05 1984-05-14 Fujitsu Ltd 交換機に於ける直流電流供給方式
JPH0821997B2 (ja) * 1992-04-03 1996-03-04 ノーザン・テレコム・リミテッド ２線式電話機ライン用インタフェース回路

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2655005C3 (de) * 1976-12-02 1980-04-17 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Schaltungsanordnung für eine elektronische Teilnehmerspeisung
NL7614118A (nl) * 1976-12-20 1978-06-22 Philips Nv Schakeling voor het beschermen van telefoon- lijnen.
NL7903663A (nl) * 1979-05-10 1980-11-12 Philips Nv Versterker voor toepassing in een lijncircuit.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4315106A (en) * 1979-11-28 1982-02-09 International Telephone And Telegraph Corporation Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems
GB2065418B (en) * 1979-12-06 1984-02-15 Standard Telephones Cables Ltd Telephone line feed
EP0087593B1 (de) * 1982-02-25 1987-01-21 Siemens Aktiengesellschaft Schaltungsanordnung für Fernmeldeanlagen, insbesondere für Fernsprechvermittlungsanlagen
IT1214603B (it) * 1985-04-30 1990-01-18 Ates Componenti Elettron Circuito telefonico, integrabile monoliticamente, perl'alimentazione di una linea telefonica d'utente.
SE465799B (sv) * 1990-03-15 1991-10-28 Ericsson Telefon Ab L M Anordning foer reducerad effektmatning till en abonnentlinje
US5103387A (en) * 1991-01-31 1992-04-07 Northern Telecom Limited High voltage converter
DE4139608A1 (de) * 1991-11-30 1993-06-03 Siemens Nixdorf Inf Syst Verfahren zur versorgungsspannungseinstellung der speiseeinrichtung von teilnehmeranschlussschaltungen
DE4233682A1 (de) * 1992-10-02 1994-04-07 Deutsche Telephonwerk Kabel Schaltungsanordnung für die Speisung von digitalen Einrichtungen
CN105812590B (zh) * 2016-05-11 2018-10-12 福建星网智慧科技股份有限公司 一种用于用户线路长短线馈电的切换方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151307A (en) * 1978-05-19 1979-11-28 Nec Corp Supply circuit for communication current
JPS55120257A (en) * 1979-02-07 1980-09-16 Int Standard Electric Corp Automatic signal equalizer circuit
JPS638665B2 (ja) * 1979-02-07 1988-02-24 Arukateru Nv
JPS5983452A (ja) * 1982-11-05 1984-05-14 Fujitsu Ltd 交換機に於ける直流電流供給方式
JPH0821997B2 (ja) * 1992-04-03 1996-03-04 ノーザン・テレコム・リミテッド ２線式電話機ライン用インタフェース回路

Also Published As

Publication number Publication date
GB1489143A (en) 1977-10-19
CH586983A5 (ja) 1977-04-15
FR2296325A1 (fr) 1976-07-23
DE2551916C3 (de) 1982-02-25
DE2551916B2 (de) 1981-07-02
JPS5929985B2 (ja) 1984-07-24
DE2551916A1 (de) 1976-11-04
FR2296325B1 (ja) 1981-03-06

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