FR2296339A1 - Circuit d'interface de ligne d'abonne - Google Patents

Circuit d'interface de ligne d'abonne

Info

Publication number
FR2296339A1
FR2296339A1 FR7535236A FR7535236A FR2296339A1 FR 2296339 A1 FR2296339 A1 FR 2296339A1 FR 7535236 A FR7535236 A FR 7535236A FR 7535236 A FR7535236 A FR 7535236A FR 2296339 A1 FR2296339 A1 FR 2296339A1
Authority
FR
France
Prior art keywords
interface circuit
subscriber line
line interface
subscriber
circuit
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
FR7535236A
Other languages
English (en)
Other versions
FR2296339B1 (fr
Inventor
Hans-Rudolf Muller
Hans Dr Schindler
Peter Vettiger
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 FR2296339A1 publication Critical patent/FR2296339A1/fr
Application granted granted Critical
Publication of FR2296339B1 publication Critical patent/FR2296339B1/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)
FR7535236A 1974-12-23 1975-11-10 Circuit d'interface de ligne d'abonne Granted FR2296339A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1722074A CH586984A5 (fr) 1974-12-23 1974-12-23

Publications (2)

Publication Number Publication Date
FR2296339A1 true FR2296339A1 (fr) 1976-07-23
FR2296339B1 FR2296339B1 (fr) 1981-12-31

Family

ID=4423697

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535236A Granted FR2296339A1 (fr) 1974-12-23 1975-11-10 Circuit d'interface de ligne d'abonne

Country Status (6)

Country Link
JP (1) JPS5186904A (fr)
CH (1) CH586984A5 (fr)
DE (1) DE2551816C3 (fr)
FR (1) FR2296339A1 (fr)
GB (1) GB1481750A (fr)
IT (1) IT1049925B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414832A1 (fr) * 1978-01-13 1979-08-10 Labo Cent Telecommunicat Pont d'alimentation pour ligne telephonique
FR2448818A1 (fr) * 1979-02-07 1980-09-05 Int Standard Electric Corp Circuits d'alimentation a courant limite et d'egalisation automatique de signal, pour lignes telephoniques d'abonnes
FR2500699A1 (fr) * 1981-02-20 1982-08-27 Mitel Corp Circuit d'economie d'energie, notamment pour circuit de ligne d'abonne telephonique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413715A (en) * 1977-07-01 1979-02-01 Nippon Telegr & Teleph Corp <Ntt> Four-wire switching system
JPS5494811A (en) * 1978-01-11 1979-07-26 Hitachi Ltd Supply system for channel current
JPS5494810A (en) * 1978-01-11 1979-07-26 Hitachi Ltd Supply system for channel current
IT1159706B (it) * 1978-06-02 1987-03-04 Cselt Centro Studi Lab Telecom Circuito telefonico elettronico di linea d'utente
NL7810086A (nl) * 1978-10-06 1980-04-09 Philips Nv Voedingsbrug voor een abonneestroomloop.
FR2460078B1 (fr) * 1979-06-25 1986-12-12 Trt Telecom Radio Electr Joncteur d'abonne electronique
DE3214624C2 (de) * 1982-04-20 1986-05-28 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Auswertung von Teilnehmerschleifenzuständen in Fernsprechanlagen, insbesondere in Fernsprechnebenstellenanlagen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649769A (en) * 1970-10-28 1972-03-14 Gen Electric Circuit for supplying direct current to a telephone line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414832A1 (fr) * 1978-01-13 1979-08-10 Labo Cent Telecommunicat Pont d'alimentation pour ligne telephonique
FR2448818A1 (fr) * 1979-02-07 1980-09-05 Int Standard Electric Corp Circuits d'alimentation a courant limite et d'egalisation automatique de signal, pour lignes telephoniques d'abonnes
FR2500699A1 (fr) * 1981-02-20 1982-08-27 Mitel Corp Circuit d'economie d'energie, notamment pour circuit de ligne d'abonne telephonique

Also Published As

Publication number Publication date
DE2551816A1 (de) 1976-06-24
DE2551816C3 (de) 1980-10-30
IT1049925B (it) 1981-02-10
GB1481750A (en) 1977-08-03
JPS5186904A (ja) 1976-07-30
CH586984A5 (fr) 1977-04-15
DE2551816B2 (de) 1979-06-13
JPS5619784B2 (fr) 1981-05-09
FR2296339B1 (fr) 1981-12-31

Similar Documents

Publication Publication Date Title
DK89378A (da) Abonnentlinie/centralliniekreds
BE819400A (fr) Disjoncteur de ligne pour circuit de telecommunications
FR2416600B1 (fr) Circuit de ligne telephonique
BR7306478D0 (pt) Circuito de aparelho telefonico de assinante
BE826833A (fr) Circuit de conference
FR2456438B1 (fr) Circuit de ligne d&#39;abonne au telephone
FR2296339A1 (fr) Circuit d&#39;interface de ligne d&#39;abonne
SE392557B (sv) Abonnenttelefonapparat
BE857998A (fr) Circuit d&#39;interface
FR2274173A1 (fr) Circuit de reception de ligne numerique
BE784382A (fr) Circuit d&#39;abonnes telephoniques
IT1074892B (it) Dispositivo per telecomunicazioni digitali
IT1041872B (it) Apparecchio telefonico
FR2294594A1 (fr) Circuit d&#39;attaque pour ligne de transmission
BE858262A (fr) Circuit de ligne telephonique
SE7611637L (sv) Digital kopplingsanordning
IT1024529B (it) Forchetta telefonica simmetrica
SE7514141L (sv) Telefonoverdrag
SE409537B (sv) Telefonapparatsystem
FR2286572A1 (fr) Interface d&#39;interconnexion
BE829496A (fr) Circuit de conference
BE828071A (fr) Sonnerie telephonique
BE836775A (fr) Preparation d&#39;alpha - 6 - desoxytetracyclines
JPS537109A (en) Subscriber*s line circuit
RO66919A2 (fr) Circuit d&#39;exclusion

Legal Events

Date Code Title Description
ST Notification of lapse