FR2324181B1 - - Google Patents

Info

Publication number
FR2324181B1
FR2324181B1 FR7528088A FR7528088A FR2324181B1 FR 2324181 B1 FR2324181 B1 FR 2324181B1 FR 7528088 A FR7528088 A FR 7528088A FR 7528088 A FR7528088 A FR 7528088A FR 2324181 B1 FR2324181 B1 FR 2324181B1
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
FR7528088A
Other versions
FR2324181A1 (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.)
LANNIONNAIS ELECTRONIQUE
Original Assignee
LANNIONNAIS ELECTRONIQUE
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 LANNIONNAIS ELECTRONIQUE filed Critical LANNIONNAIS ELECTRONIQUE
Priority to FR7528088A priority Critical patent/FR2324181A1/fr
Publication of FR2324181A1 publication Critical patent/FR2324181A1/fr
Application granted granted Critical
Publication of FR2324181B1 publication Critical patent/FR2324181B1/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
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
FR7528088A 1975-09-12 1975-09-12 Dispositif de detection de boucle d'une ligne d'abonne Granted FR2324181A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7528088A FR2324181A1 (fr) 1975-09-12 1975-09-12 Dispositif de detection de boucle d'une ligne d'abonne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7528088A FR2324181A1 (fr) 1975-09-12 1975-09-12 Dispositif de detection de boucle d'une ligne d'abonne

Publications (2)

Publication Number Publication Date
FR2324181A1 FR2324181A1 (fr) 1977-04-08
FR2324181B1 true FR2324181B1 (fr) 1979-03-23

Family

ID=9159942

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7528088A Granted FR2324181A1 (fr) 1975-09-12 1975-09-12 Dispositif de detection de boucle d'une ligne d'abonne

Country Status (1)

Country Link
FR (1) FR2324181A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087646A (en) * 1977-01-28 1978-05-02 Bell Telephone Laboratories, Incorporated Dual mode telephone subscriber loop current detector
FR2501940B1 (fr) * 1981-03-11 1985-07-19 Trt Telecom Radio Electr Detecteur de boucle peu sensible aux tensions longitudinales
CA1196433A (fr) * 1983-08-18 1985-11-05 Stanley D. Rosenbaum Circuit actif d'alimentation de ligne assiste par transformateur d'impedance avec filtrage de supervision
EP0201635B1 (fr) * 1985-05-17 1991-12-18 BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap Circuit de Ligne de télécommunication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2138548B1 (fr) * 1971-05-19 1973-05-25 Ibm France
US3821486A (en) * 1973-06-22 1974-06-28 Bell Telephone Labor Inc Bridge type supervisory detector with reduced breakdown voltage requirements

Also Published As

Publication number Publication date
FR2324181A1 (fr) 1977-04-08

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse