FR2388446A1 - Circuit de detection de l'etat d'une ligne de transmission - Google Patents

Circuit de detection de l'etat d'une ligne de transmission

Info

Publication number
FR2388446A1
FR2388446A1 FR7712216A FR7712216A FR2388446A1 FR 2388446 A1 FR2388446 A1 FR 2388446A1 FR 7712216 A FR7712216 A FR 7712216A FR 7712216 A FR7712216 A FR 7712216A FR 2388446 A1 FR2388446 A1 FR 2388446A1
Authority
FR
France
Prior art keywords
line
high value
detectors
detector system
state detector
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
FR7712216A
Other languages
English (en)
Other versions
FR2388446B3 (fr
Inventor
Andre Mingaud
Pierre Henri Cogne
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.)
Constr Telephoniques
Original Assignee
Constr Telephoniques
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 Constr Telephoniques filed Critical Constr Telephoniques
Priority to FR7712216A priority Critical patent/FR2388446A1/fr
Priority to BE2056893A priority patent/BE866219R/fr
Publication of FR2388446A1 publication Critical patent/FR2388446A1/fr
Application granted granted Critical
Publication of FR2388446B3 publication Critical patent/FR2388446B3/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)

Abstract

L'invention concerne un circuit de détection de l'état d'une ligne de transmission. Le circuit proposé comprend, notamment, un circuit de détection de courant couplé à un fil de la ligne pour fournir un premier et un second signal de détection d'un premier ou d'un second niveau selon l'existence et le sens du courant sur la ligne, et un circuit de détection de tension couplé d'une part, aux deux fils de la ligne de transmission, d'autre part, à un potentiel de référence pour fournir un troisième signal d'un premier ou d'un second niveau selon que la tension obtenue des fils de ligne est supérieure ou non au potentiel de référence, ce troisième signal permettant d'interpreter la signification des premier et second signaux de détection. L'invention s'applique pour la détection et l'identification de courants circulant dans une ligne téléphonique.
FR7712216A 1977-04-22 1977-04-22 Circuit de detection de l'etat d'une ligne de transmission Granted FR2388446A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7712216A FR2388446A1 (fr) 1977-04-22 1977-04-22 Circuit de detection de l'etat d'une ligne de transmission
BE2056893A BE866219R (fr) 1977-04-22 1978-04-21 Detecteur d'etat de boucle pour ligne telephonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7712216A FR2388446A1 (fr) 1977-04-22 1977-04-22 Circuit de detection de l'etat d'une ligne de transmission

Publications (2)

Publication Number Publication Date
FR2388446A1 true FR2388446A1 (fr) 1978-11-17
FR2388446B3 FR2388446B3 (fr) 1980-02-01

Family

ID=9189804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7712216A Granted FR2388446A1 (fr) 1977-04-22 1977-04-22 Circuit de detection de l'etat d'une ligne de transmission

Country Status (2)

Country Link
BE (1) BE866219R (fr)
FR (1) FR2388446A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089355A1 (fr) * 1981-09-30 1983-09-28 Western Electric Co Circuit detecteur pour lignes de communication.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089355A1 (fr) * 1981-09-30 1983-09-28 Western Electric Co Circuit detecteur pour lignes de communication.
EP0089355A4 (fr) * 1981-09-30 1985-07-01 Western Electric Co Circuit detecteur pour lignes de communication.

Also Published As

Publication number Publication date
BE866219R (fr) 1978-10-23
FR2388446B3 (fr) 1980-02-01

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