FR2251975A1 - - Google Patents

Info

Publication number
FR2251975A1
FR2251975A1 FR7340850A FR7340850A FR2251975A1 FR 2251975 A1 FR2251975 A1 FR 2251975A1 FR 7340850 A FR7340850 A FR 7340850A FR 7340850 A FR7340850 A FR 7340850A FR 2251975 A1 FR2251975 A1 FR 2251975A1
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.)
Granted
Application number
FR7340850A
Other languages
French (fr)
Other versions
FR2251975B1 (en
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7340850A priority Critical patent/FR2251975B1/fr
Priority to ZA00747128A priority patent/ZA747128B/en
Priority to DE2453094A priority patent/DE2453094B2/en
Priority to GB4886074A priority patent/GB1452386A/en
Priority to CH1524474A priority patent/CH596727A5/xx
Publication of FR2251975A1 publication Critical patent/FR2251975A1/fr
Application granted granted Critical
Publication of FR2251975B1 publication Critical patent/FR2251975B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits
FR7340850A 1973-11-16 1973-11-16 Expired FR2251975B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7340850A FR2251975B1 (en) 1973-11-16 1973-11-16
ZA00747128A ZA747128B (en) 1973-11-16 1974-11-06 Electronic trunk junctor
DE2453094A DE2453094B2 (en) 1973-11-16 1974-11-08 Electronic connection kit
GB4886074A GB1452386A (en) 1973-11-16 1974-11-12 Electronic trunk junctor
CH1524474A CH596727A5 (en) 1973-11-16 1974-11-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7340850A FR2251975B1 (en) 1973-11-16 1973-11-16

Publications (2)

Publication Number Publication Date
FR2251975A1 true FR2251975A1 (en) 1975-06-13
FR2251975B1 FR2251975B1 (en) 1979-08-03

Family

ID=9127862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7340850A Expired FR2251975B1 (en) 1973-11-16 1973-11-16

Country Status (5)

Country Link
CH (1) CH596727A5 (en)
DE (1) DE2453094B2 (en)
FR (1) FR2251975B1 (en)
GB (1) GB1452386A (en)
ZA (1) ZA747128B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326100A1 (en) * 1975-09-26 1977-04-22 Ericsson Telefon Ab L M Junction network for electronic telephone installation - comprises electronic elements compatible with logic circuits to eliminate relay noise
FR2372563A1 (en) * 1976-11-25 1978-06-23 Ericsson Telefon Ab L M Telephone network exchange junction - includes detection coils and current detectors and switches in line branches from two-core cable
EP0010720A1 (en) * 1978-10-27 1980-05-14 Siemens Aktiengesellschaft Fully electronic loop closure circuit
FR2500975A1 (en) * 1981-02-27 1982-09-03 Cit Alcatel Inductive circuit for matching in telecommunications network - uses opto-electronic coupling to isolate control signals from multiplexer driving measuring circuit
FR2530105A1 (en) * 1982-07-07 1984-01-13 Constr Telephoniques LOOP CIRCUIT FOR TELEPHONE LINE
FR2544144A1 (en) * 1983-04-11 1984-10-12 Rosny Unite Tech MODULATOR RELAYS, ESPECIALLY FOR TELECOMMUNICATIONS INSTALLATIONS
FR2546351A1 (en) * 1983-05-18 1984-11-23 Telecommunications Sa LINE CIRCUIT FOR NETWORK JUMPER

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123131A (en) * 1978-02-28 1982-05-04 Michael C.J. Cowpland Transformerless trunk circuit
CH635216A5 (en) * 1978-10-25 1983-03-15 Hansjoerg Erne DEVICE FOR MONITORING THE LINE CURRENT IN A TELEPHONE LINE.
DE3322642A1 (en) * 1983-06-23 1985-01-24 Siemens AG, 1000 Berlin und 8000 München Hybrid circuit for telephone stations with amplifiers
DE3407226A1 (en) * 1984-02-28 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for an electronic choke in loudspeaker telephone stations
DE3407202A1 (en) * 1984-02-28 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for an electronic choke in loudspeaker telephone stations
DE3604491A1 (en) * 1986-02-13 1987-08-20 Gaertner Karl Telegaertner Device with bistable relay
DE3804216A1 (en) * 1988-02-11 1989-08-24 Telefonbau & Normalzeit Gmbh CIRCUIT ARRANGEMENT FOR EXTERNAL LINE TRANSMISSION OF COMMUNICATION SWITCHING SYSTEMS, ESPECIALLY TELEPHONE EXTENSION SYSTEMS
GB2220820B (en) * 1988-07-13 1992-07-08 Philips Electronic Associated Telephone line loop current regulator
DE4337530A1 (en) * 1993-11-04 1995-05-11 Bergermann Petra Module for connecting devices to the public telephone network
CN101729699B (en) * 2008-10-25 2012-02-01 华为技术有限公司 Separation equipment and method for transmitting voice signal

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326100A1 (en) * 1975-09-26 1977-04-22 Ericsson Telefon Ab L M Junction network for electronic telephone installation - comprises electronic elements compatible with logic circuits to eliminate relay noise
FR2372563A1 (en) * 1976-11-25 1978-06-23 Ericsson Telefon Ab L M Telephone network exchange junction - includes detection coils and current detectors and switches in line branches from two-core cable
EP0010720A1 (en) * 1978-10-27 1980-05-14 Siemens Aktiengesellschaft Fully electronic loop closure circuit
FR2500975A1 (en) * 1981-02-27 1982-09-03 Cit Alcatel Inductive circuit for matching in telecommunications network - uses opto-electronic coupling to isolate control signals from multiplexer driving measuring circuit
EP0099272A3 (en) * 1982-07-07 1984-11-07 COMPAGNIE GENERALE DE CONSTRUCTIONS TELEPHONIQUES Société Anonyme dite: Loop circuit for a telephone line
FR2530105A1 (en) * 1982-07-07 1984-01-13 Constr Telephoniques LOOP CIRCUIT FOR TELEPHONE LINE
EP0099272A2 (en) * 1982-07-07 1984-01-25 COMPAGNIE GENERALE DE CONSTRUCTIONS TELEPHONIQUES Société Anonyme dite: Loop circuit for a telephone line
US4535202A (en) * 1982-07-07 1985-08-13 Compagnie Generale De Constructions Telephoniques Loop-circuit for telephone line
FR2544144A1 (en) * 1983-04-11 1984-10-12 Rosny Unite Tech MODULATOR RELAYS, ESPECIALLY FOR TELECOMMUNICATIONS INSTALLATIONS
EP0122852A1 (en) * 1983-04-11 1984-10-24 UNITE TECHNIQUE ROSNY, Société dite: Modulating relay, particularly for telecommunication equipment
FR2546351A1 (en) * 1983-05-18 1984-11-23 Telecommunications Sa LINE CIRCUIT FOR NETWORK JUMPER
EP0127517A1 (en) * 1983-05-18 1984-12-05 Societe Anonyme De Telecommunications (S.A.T.) Junction circuit for an exchange trunk
US4567329A (en) * 1983-05-18 1986-01-28 Societe Anonyme De Telecommunications Line circuit for network junctor

Also Published As

Publication number Publication date
FR2251975B1 (en) 1979-08-03
CH596727A5 (en) 1978-03-15
DE2453094B2 (en) 1979-11-29
ZA747128B (en) 1975-11-26
DE2453094A1 (en) 1975-05-22
GB1452386A (en) 1976-10-13

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Legal Events

Date Code Title Description
ST Notification of lapse