ATE47266T1 - Uebertragungsunterstuetzte leitungsspeiseschaltung ativer impedanz mit filterfunktion fuer ueberwachungssignale. - Google Patents

Uebertragungsunterstuetzte leitungsspeiseschaltung ativer impedanz mit filterfunktion fuer ueberwachungssignale.

Info

Publication number
ATE47266T1
ATE47266T1 AT85303095T AT85303095T ATE47266T1 AT E47266 T1 ATE47266 T1 AT E47266T1 AT 85303095 T AT85303095 T AT 85303095T AT 85303095 T AT85303095 T AT 85303095T AT E47266 T1 ATE47266 T1 AT E47266T1
Authority
AT
Austria
Prior art keywords
ring
tip
signal
transformer
amplifier
Prior art date
Application number
AT85303095T
Other languages
English (en)
Inventor
Stanley Daniel Rosenbaum
Zdenek J Holy
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Application granted granted Critical
Publication of ATE47266T1 publication Critical patent/ATE47266T1/de

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Networks Using Active Elements (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
AT85303095T 1983-08-18 1985-05-01 Uebertragungsunterstuetzte leitungsspeiseschaltung ativer impedanz mit filterfunktion fuer ueberwachungssignale. ATE47266T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000434913A CA1196433A (en) 1983-08-18 1983-08-18 Active impedance transformer assisted line feed circuit with supervision filtering
EP85303095A EP0199865B1 (de) 1983-08-18 1985-05-01 Übertragungsunterstützte Leitungsspeiseschaltung ativer Impedanz mit Filterfunktion für Überwachungssignale

Publications (1)

Publication Number Publication Date
ATE47266T1 true ATE47266T1 (de) 1989-10-15

Family

ID=39591845

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85303095T ATE47266T1 (de) 1983-08-18 1985-05-01 Uebertragungsunterstuetzte leitungsspeiseschaltung ativer impedanz mit filterfunktion fuer ueberwachungssignale.

Country Status (4)

Country Link
EP (1) EP0199865B1 (de)
AT (1) ATE47266T1 (de)
CA (1) CA1196433A (de)
DE (1) DE3573699D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274702A (en) * 1992-04-16 1993-12-28 Northern Telecom Limited Wideband telephone line interface circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324181A1 (fr) * 1975-09-12 1977-04-08 Lannionnais Electronique Dispositif de detection de boucle d'une ligne d'abonne
CA1178386A (en) * 1982-06-07 1984-11-20 Stanley D. Rosenbaum Active impedance transformer assisted line feed circuit

Also Published As

Publication number Publication date
DE3573699D1 (en) 1989-11-16
EP0199865B1 (de) 1989-10-11
EP0199865A1 (de) 1986-11-05
CA1196433A (en) 1985-11-05

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee