CA2205320C - Circuit d'interface a controle de la tension pour ligne telephonique - Google Patents

Circuit d'interface a controle de la tension pour ligne telephonique Download PDF

Info

Publication number
CA2205320C
CA2205320C CA002205320A CA2205320A CA2205320C CA 2205320 C CA2205320 C CA 2205320C CA 002205320 A CA002205320 A CA 002205320A CA 2205320 A CA2205320 A CA 2205320A CA 2205320 C CA2205320 C CA 2205320C
Authority
CA
Canada
Prior art keywords
line
amplifiers
interface circuit
line interface
amplifier
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.)
Expired - Fee Related
Application number
CA002205320A
Other languages
English (en)
Other versions
CA2205320A1 (fr
Inventor
Reinhard Werner Rosch
Stanley Daniel Rosenbaum
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.)
Nortel Networks Ltd
Original Assignee
Nortel Networks Corp
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 Nortel Networks Corp filed Critical Nortel Networks Corp
Priority to CA002205320A priority Critical patent/CA2205320C/fr
Priority claimed from CA002131295A external-priority patent/CA2131295C/fr
Publication of CA2205320A1 publication Critical patent/CA2205320A1/fr
Application granted granted Critical
Publication of CA2205320C publication Critical patent/CA2205320C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
CA002205320A 1993-03-17 1993-03-17 Circuit d'interface a controle de la tension pour ligne telephonique Expired - Fee Related CA2205320C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002205320A CA2205320C (fr) 1993-03-17 1993-03-17 Circuit d'interface a controle de la tension pour ligne telephonique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002205320A CA2205320C (fr) 1993-03-17 1993-03-17 Circuit d'interface a controle de la tension pour ligne telephonique
CA002131295A CA2131295C (fr) 1992-04-16 1993-03-17 Circuit d'interface de ligne telephonique avec commande de tension

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002131295A Division CA2131295C (fr) 1992-04-16 1993-03-17 Circuit d'interface de ligne telephonique avec commande de tension

Publications (2)

Publication Number Publication Date
CA2205320A1 CA2205320A1 (fr) 1993-10-28
CA2205320C true CA2205320C (fr) 2000-02-15

Family

ID=29425409

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002205320A Expired - Fee Related CA2205320C (fr) 1993-03-17 1993-03-17 Circuit d'interface a controle de la tension pour ligne telephonique

Country Status (1)

Country Link
CA (1) CA2205320C (fr)

Also Published As

Publication number Publication date
CA2205320A1 (fr) 1993-10-28

Similar Documents

Publication Publication Date Title
EP0636295B1 (fr) Circuit d'interface de ligne telephonique a large bande
US5511118A (en) Method of providing d.c. feed to a telephone line
US4161633A (en) Subscriber line/trunk circuit
EP0636297B1 (fr) Circuit d'interface de ligne d'abonne a courant de boucle commande en tension
CA1202742A (fr) Circuit d'interface de ligne pour le declenchement par boucle et par la terre
US5323460A (en) Enhanced subscriber line interface circuit
CA1268873A (fr) Circuit d'interface pour ligne de communication
CA1292588C (fr) Circuit d'interface pour ligne d'abonne
US3934099A (en) Bias, feedback and network arrangements for hybrid circuits
CA2042292C (fr) Boucle multiple a adaptation d'impedance utilisant des dispositifs de filtrage
US4588865A (en) Music on hold for key systems
US3894187A (en) Circuit for comparing at least two input signals to generate control signals
US5258713A (en) Impedance generator for a telephone line interface circuit
CA2205320C (fr) Circuit d'interface a controle de la tension pour ligne telephonique
US4354062A (en) Communication system signaling circuit
US5293420A (en) Ring trip circuit
US3983332A (en) Conference call circuitry for TDM signal exchange
US5191507A (en) Polarity inverting circuit
KR100343343B1 (ko) 호출음신호발생방법및장치
WO1994017619A1 (fr) Procede pour fournir une alimentation en courant continu a une ligne telephonique
KR100224565B1 (ko) 교환기 가입자 시스템의 에코 캔설레이션 이득 오차 보상 회로
US6167135A (en) Method and apparatus for generating a ringing signal
US6191684B1 (en) Remote supply circuitry
WO1995019083A2 (fr) Circuit d'interface
WO1983001162A1 (fr) Circuit electronique termineur

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed