FR2279285A1 - Detecteur d'etat de boucle pour ligne telephonique - Google Patents

Detecteur d'etat de boucle pour ligne telephonique

Info

Publication number
FR2279285A1
FR2279285A1 FR7416389A FR7416389A FR2279285A1 FR 2279285 A1 FR2279285 A1 FR 2279285A1 FR 7416389 A FR7416389 A FR 7416389A FR 7416389 A FR7416389 A FR 7416389A FR 2279285 A1 FR2279285 A1 FR 2279285A1
Authority
FR
France
Prior art keywords
electro
luminescent element
telephone line
current limiter
current
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
FR7416389A
Other languages
English (en)
French (fr)
Other versions
FR2279285B1 (ref
Inventor
Marie-Helene Comte
Pierre Girard
Claude Paul Henri Lerouge
Marc Andre Regnier
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 FR7416389A priority Critical patent/FR2279285A1/fr
Priority to BE2054343A priority patent/BE828977A/xx
Publication of FR2279285A1 publication Critical patent/FR2279285A1/fr
Application granted granted Critical
Publication of FR2279285B1 publication Critical patent/FR2279285B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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)
  • Interface Circuits In Exchanges (AREA)
FR7416389A 1974-05-13 1974-05-13 Detecteur d'etat de boucle pour ligne telephonique Granted FR2279285A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7416389A FR2279285A1 (fr) 1974-05-13 1974-05-13 Detecteur d'etat de boucle pour ligne telephonique
BE2054343A BE828977A (fr) 1974-05-13 1975-05-13 Detecteur d'etat de boucle pour ligne telephonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7416389A FR2279285A1 (fr) 1974-05-13 1974-05-13 Detecteur d'etat de boucle pour ligne telephonique

Publications (2)

Publication Number Publication Date
FR2279285A1 true FR2279285A1 (fr) 1976-02-13
FR2279285B1 FR2279285B1 (ref) 1978-04-14

Family

ID=9138729

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7416389A Granted FR2279285A1 (fr) 1974-05-13 1974-05-13 Detecteur d'etat de boucle pour ligne telephonique

Country Status (2)

Country Link
BE (1) BE828977A (ref)
FR (1) FR2279285A1 (ref)

Also Published As

Publication number Publication date
FR2279285B1 (ref) 1978-04-14
BE828977A (fr) 1975-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse