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ZA834517B - Apparatus for use with a subscriber connection circuit in a telecommunications exchange - Google Patents

Apparatus for use with a subscriber connection circuit in a telecommunications exchange

Info

Publication number
ZA834517B
ZA834517B ZA834517A ZA834517A ZA834517B ZA 834517 B ZA834517 B ZA 834517B ZA 834517 A ZA834517 A ZA 834517A ZA 834517 A ZA834517 A ZA 834517A ZA 834517 B ZA834517 B ZA 834517B
Authority
ZA
South Africa
Prior art keywords
switching
subscriber connection
ohmic
circuit
supply
Prior art date
Application number
ZA834517A
Other languages
English (en)
Inventor
Werner Nagler
Walter Obler
Kurt Kovar
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ZA834517B publication Critical patent/ZA834517B/xx

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
    • H04M19/02—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)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
ZA834517A 1982-06-22 1983-06-21 Apparatus for use with a subscriber connection circuit in a telecommunications exchange ZA834517B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3223292A DE3223292C2 (de) 1982-06-22 1982-06-22 Schaltungsanordnung zur Feststellung des Schaltzustandes einer Teilnehmeranschlußleitung in Fernmeldeanlagen

Publications (1)

Publication Number Publication Date
ZA834517B true ZA834517B (en) 1984-03-28

Family

ID=6166563

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA834517A ZA834517B (en) 1982-06-22 1983-06-21 Apparatus for use with a subscriber connection circuit in a telecommunications exchange

Country Status (5)

Country Link
EP (1) EP0097354B1 (xx)
AT (1) ATE32970T1 (xx)
BR (1) BR8303292A (xx)
DE (1) DE3223292C2 (xx)
ZA (1) ZA834517B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2096514B1 (es) * 1993-12-31 1998-02-16 Telefonica Nacional Espana Co Circuito de exploracion de puntos.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938998C2 (de) * 1979-09-26 1984-12-13 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für eine die Schaltzustände einer Übertragungsleitung, insbesondere einer Teilnehmeranschlußleitung registrierenden Indikatorschaltung in Fernsprechvermittlungsanlagen
DE2939009A1 (de) * 1979-09-26 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur feststellung des schaltzustandes einer teilnehmeranschlussleitung in fernsprechvermittlungsanlagen
DE3207318A1 (de) * 1982-03-01 1983-09-08 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlussschaltung mit niederohmig ueberbrueckbaren speisewiderstaenden und einer unterschiedliche indikationen durchfuehrenden indikationsschaltung

Also Published As

Publication number Publication date
EP0097354B1 (de) 1988-03-09
EP0097354A3 (en) 1985-09-18
DE3223292C2 (de) 1986-11-27
EP0097354A2 (de) 1984-01-04
BR8303292A (pt) 1984-02-07
ATE32970T1 (de) 1988-03-15
DE3223292A1 (de) 1983-12-22

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