ZA826239B - A telephone subscriber connection circuit - Google Patents

A telephone subscriber connection circuit

Info

Publication number
ZA826239B
ZA826239B ZA826239A ZA826239A ZA826239B ZA 826239 B ZA826239 B ZA 826239B ZA 826239 A ZA826239 A ZA 826239A ZA 826239 A ZA826239 A ZA 826239A ZA 826239 B ZA826239 B ZA 826239B
Authority
ZA
South Africa
Prior art keywords
connection circuit
telephone subscriber
subscriber connection
telephone
circuit
Prior art date
Application number
ZA826239A
Other languages
English (en)
Inventor
Horst Kopetzky
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 ZA826239B publication Critical patent/ZA826239B/xx

Links

Classifications

    • 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
    • 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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
ZA826239A 1981-08-27 1982-08-26 A telephone subscriber connection circuit ZA826239B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813133934 DE3133934A1 (de) 1981-08-27 1981-08-27 Teilnehmeranschlussschaltung

Publications (1)

Publication Number Publication Date
ZA826239B true ZA826239B (en) 1983-07-27

Family

ID=6140258

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA826239A ZA826239B (en) 1981-08-27 1982-08-26 A telephone subscriber connection circuit

Country Status (9)

Country Link
US (1) US4492821A (xx)
EP (1) EP0073462B1 (xx)
JP (1) JPS5842349A (xx)
AR (1) AR231689A1 (xx)
AT (1) ATE24260T1 (xx)
BR (1) BR8205022A (xx)
DE (1) DE3133934A1 (xx)
FI (1) FI75713C (xx)
ZA (1) ZA826239B (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3781190D1 (de) * 1986-04-23 1992-09-24 Siemens Ag Schaltungsanordnung fuer den anschluss von anschlussleitungen eines digitalen zeitmultiplex-fernsprechnetzes.
IT1248549B (it) * 1991-06-25 1995-01-19 Sgs Thomson Microelectronics Complesso circuitale telefonico ad attacco d'utente elettronico con circuito per la rivelazione dello sgancio in fase di suoneria a numerodi componenti ridotto.
DE4326894C2 (de) * 1993-08-11 1997-01-30 Sel Alcatel Ag Schaltungsanordnung zur Rufspannungsabschaltung in einer elektronischen Teilnehmerschaltung
US5663878A (en) * 1996-03-21 1997-09-02 Unitrode Corporation Apparatus and method for generating a low frequency AC signal
EP0831632A3 (de) * 1996-09-24 2003-03-19 Siemens Aktiengesellschaft Schaltungsanordnung zur Fehlerindikation bei analogen Teilnehmerleitungen von Notruftelefonen digitaler Zeitmultiplex-Fernsprechvermittlungsanlagen
US6115469A (en) * 1998-08-25 2000-09-05 Unitrode Corporation Telephone line ring signal and DC power generator
DE102017113905A1 (de) * 2017-06-23 2018-12-27 Valeo Schalter Und Sensoren Gmbh Schaltungsanordnung zur Auswertung von zumindest zwei Schaltzuständen eines Betätigungselementes, Verfahren zum Betreiben einer Schaltungsanordnung sowie Schaltvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164713A (en) * 1977-01-28 1979-08-14 Bell Telephone Laboratories, Incorporated Dual mode telephone subscriber loop current detector
US4099032A (en) * 1977-03-25 1978-07-04 Wescom, Inc. Loop current detector
DE2850929C2 (de) * 1978-11-24 1982-06-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Unterdrückung von Störspannungseinflüssen bei der Bewertung des Signalzustandes auf Übertragungsleitungen, insbesondere auf Teilnehmeranschlußleitungen in Fernsprechanlagen
DE3036686C2 (de) * 1980-09-29 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlußschaltung

Also Published As

Publication number Publication date
FI822970L (fi) 1983-02-28
ATE24260T1 (de) 1986-12-15
EP0073462A2 (de) 1983-03-09
FI822970A0 (fi) 1982-08-26
JPS5842349A (ja) 1983-03-11
EP0073462A3 (en) 1984-02-22
BR8205022A (pt) 1983-08-09
EP0073462B1 (de) 1986-12-10
US4492821A (en) 1985-01-08
AR231689A1 (es) 1985-01-31
FI75713B (fi) 1988-03-31
DE3133934A1 (de) 1983-03-17
FI75713C (fi) 1988-07-11
DE3133934C2 (xx) 1989-11-30

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