IT8567455A1 - Interfaccia di collegamento di circuito d'abbonato per autocommutatore telefonico. - Google Patents

Interfaccia di collegamento di circuito d'abbonato per autocommutatore telefonico.

Info

Publication number
IT8567455A1
IT8567455A1 IT1985A67455A IT6745585A IT8567455A1 IT 8567455 A1 IT8567455 A1 IT 8567455A1 IT 1985A67455 A IT1985A67455 A IT 1985A67455A IT 6745585 A IT6745585 A IT 6745585A IT 8567455 A1 IT8567455 A1 IT 8567455A1
Authority
IT
Italy
Prior art keywords
circuit connection
connection interface
subscriber circuit
telephone switch
telephone
Prior art date
Application number
IT1985A67455A
Other languages
English (en)
Other versions
IT1183840B (it
IT8567455A0 (it
Original Assignee
Thomson Csf Mat Tel
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 Thomson Csf Mat Tel filed Critical Thomson Csf Mat Tel
Publication of IT8567455A0 publication Critical patent/IT8567455A0/it
Publication of IT8567455A1 publication Critical patent/IT8567455A1/it
Application granted granted Critical
Publication of IT1183840B publication Critical patent/IT1183840B/it

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)
  • Interface Circuits In Exchanges (AREA)
IT67455/85A 1984-05-18 1985-05-17 Interfaccia di collegamento di circuito d'abbonato per autocommutatore telefonico IT1183840B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8407758A FR2564678B1 (fr) 1984-05-18 1984-05-18 Interface de liaison de circuit d'abonne pour autocommutateur telephonique

Publications (3)

Publication Number Publication Date
IT8567455A0 IT8567455A0 (it) 1985-05-17
IT8567455A1 true IT8567455A1 (it) 1986-11-17
IT1183840B IT1183840B (it) 1987-10-22

Family

ID=9304139

Family Applications (2)

Application Number Title Priority Date Filing Date
IT8553397U IT8553397V0 (it) 1984-05-18 1985-05-17 Interfaccia di collegamento di circuito d abbonato per autocommutato re telefonico
IT67455/85A IT1183840B (it) 1984-05-18 1985-05-17 Interfaccia di collegamento di circuito d'abbonato per autocommutatore telefonico

Family Applications Before (1)

Application Number Title Priority Date Filing Date
IT8553397U IT8553397V0 (it) 1984-05-18 1985-05-17 Interfaccia di collegamento di circuito d abbonato per autocommutato re telefonico

Country Status (4)

Country Link
US (1) US4752952A (it)
DE (1) DE3517878A1 (it)
FR (1) FR2564678B1 (it)
IT (2) IT8553397V0 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2645022B2 (ja) * 1987-08-21 1997-08-25 株式会社東芝 加入者回路
US5270701A (en) * 1988-03-08 1993-12-14 Kokusai Denshin Denwa Co., Ltd. Service processing system with distributed data bases

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305080A1 (fr) * 1975-03-20 1976-10-15 Jeumont Schneider Termineur electronique
DE2556157C3 (de) * 1975-12-11 1979-01-18 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Schaltungsanordnung für eine elektronische Teilnehmerspeisung
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability
DE2655005C3 (de) * 1976-12-02 1980-04-17 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Schaltungsanordnung für eine elektronische Teilnehmerspeisung
DE2828886C3 (de) * 1978-06-30 1981-01-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur spulen-, relaiskontakt- und transformatorfreien Rufstrom- und Schleifenstromeinspeisung in Fernmelde-, insbesondere PCM-Fernsprechvermittlungsanlagen
FR2437116A1 (fr) * 1978-09-19 1980-04-18 Thomson Ericsson Telephones So Dispositif de separation et d'equilibrage pour autocommutateurs telephoniques
NL7904159A (nl) * 1979-05-28 1980-12-02 Philips Nv Inrichting voor het toevoeren van signalen aan een telefoonlijn.
JPS5773589A (en) * 1980-10-27 1982-05-08 Oki Electric Ind Co Ltd Subscriber's circuit
US4322586A (en) * 1980-11-13 1982-03-30 Northern Telecom Limited Transformerless line interface circuit
SE452385B (sv) * 1981-02-17 1987-11-23 Western Electric Co Batterimatningskrets
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4514595A (en) * 1982-06-10 1985-04-30 Northern Telecom Limited Active impedance line feed circuit
US4567331A (en) * 1983-12-22 1986-01-28 Itt Corporation Electronic hybrid having synthesized impedance circuitry

Also Published As

Publication number Publication date
IT1183840B (it) 1987-10-22
DE3517878C2 (it) 1993-04-01
FR2564678A1 (fr) 1985-11-22
IT8553397V0 (it) 1985-05-17
US4752952A (en) 1988-06-21
DE3517878A1 (de) 1985-11-21
IT8567455A0 (it) 1985-05-17
FR2564678B1 (fr) 1986-09-12

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940531