FR2296325B1 - - Google Patents

Info

Publication number
FR2296325B1
FR2296325B1 FR7535237A FR7535237A FR2296325B1 FR 2296325 B1 FR2296325 B1 FR 2296325B1 FR 7535237 A FR7535237 A FR 7535237A FR 7535237 A FR7535237 A FR 7535237A FR 2296325 B1 FR2296325 B1 FR 2296325B1
Authority
FR
France
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
Application number
FR7535237A
Other languages
French (fr)
Other versions
FR2296325A1 (fr
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 FR2296325A1 publication Critical patent/FR2296325A1/fr
Application granted granted Critical
Publication of FR2296325B1 publication Critical patent/FR2296325B1/fr
Granted 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)
FR7535237A 1974-12-23 1975-11-10 Procede pour la reduction de la dissipation de la puissance d'alimentation dans le circuit d'abonnes d'un systeme de communication et agencement pour la mise en oeuvre de ce procede Granted FR2296325A1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2296325A1 FR2296325A1 (fr) 1976-07-23
FR2296325B1 true FR2296325B1 (de) 1981-03-06

Family

ID=4423686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535237A Granted FR2296325A1 (fr) 1974-12-23 1975-11-10 Procede pour la reduction de la dissipation de la puissance d'alimentation dans le circuit d'abonnes d'un systeme de communication et agencement pour la mise en oeuvre de ce procede

Country Status (5)

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

Families Citing this family (18)

* 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.
JPS54151307A (en) * 1978-05-19 1979-11-28 Nec Corp Supply circuit for communication current
US4254305A (en) * 1979-02-07 1981-03-03 International Telephone And Telegraph Corporation Current limited subscriber line feed circuit
NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903663A (nl) * 1979-05-10 1980-11-12 Philips Nv Versterker voor toepassing in een 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
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
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
DE69229268T2 (de) * 1992-04-03 1999-09-23 Northern Telecom Ltd., Montreal Schnittstellenschaltung mit spannungsumschaltung für eine fernsprechleitung
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

Also Published As

Publication number Publication date
JPS5186908A (ja) 1976-07-30
DE2551916C3 (de) 1982-02-25
JPS5929985B2 (ja) 1984-07-24
DE2551916B2 (de) 1981-07-02
FR2296325A1 (fr) 1976-07-23
CH586983A5 (de) 1977-04-15
GB1489143A (en) 1977-10-19
DE2551916A1 (de) 1976-11-04

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Legal Events

Date Code Title Description
ST Notification of lapse