ZA831355B - A subscriber connection circuit comprising feed resistors which can be bridged and an indication circuit which effects different indications - Google Patents

A subscriber connection circuit comprising feed resistors which can be bridged and an indication circuit which effects different indications

Info

Publication number
ZA831355B
ZA831355B ZA831355A ZA831355A ZA831355B ZA 831355 B ZA831355 B ZA 831355B ZA 831355 A ZA831355 A ZA 831355A ZA 831355 A ZA831355 A ZA 831355A ZA 831355 B ZA831355 B ZA 831355B
Authority
ZA
South Africa
Prior art keywords
circuit
bridged
indication
subscriber connection
indication circuit
Prior art date
Application number
ZA831355A
Other languages
English (en)
Inventor
Horst Kopetzky
Werner Nagler
Walter Obler
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 ZA831355B publication Critical patent/ZA831355B/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
ZA831355A 1982-03-01 1983-02-28 A subscriber connection circuit comprising feed resistors which can be bridged and an indication circuit which effects different indications ZA831355B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823207318 DE3207318A1 (de) 1982-03-01 1982-03-01 Teilnehmeranschlussschaltung mit niederohmig ueberbrueckbaren speisewiderstaenden und einer unterschiedliche indikationen durchfuehrenden indikationsschaltung

Publications (1)

Publication Number Publication Date
ZA831355B true ZA831355B (en) 1983-11-30

Family

ID=6157011

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA831355A ZA831355B (en) 1982-03-01 1983-02-28 A subscriber connection circuit comprising feed resistors which can be bridged and an indication circuit which effects different indications

Country Status (6)

Country Link
US (1) US4562308A (xx)
EP (1) EP0087784B1 (xx)
JP (1) JPS58162187A (xx)
AT (1) ATE28019T1 (xx)
DE (1) DE3207318A1 (xx)
ZA (1) ZA831355B (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223292C2 (de) * 1982-06-22 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Feststellung des Schaltzustandes einer Teilnehmeranschlußleitung in Fernmeldeanlagen
JPS6269759A (ja) * 1985-09-20 1987-03-31 Matsushita Electric Ind Co Ltd 電話交換機のオフフツク状態検出回路
US5004232A (en) * 1989-10-13 1991-04-02 Macronix, Inc. Computer game cartridge security circuit
US6609977B1 (en) 2000-08-23 2003-08-26 Nintendo Co., Ltd. External interfaces for a 3D graphics system
US7134960B1 (en) 2000-08-23 2006-11-14 Nintendo Co., Ltd. External interfaces for a 3D graphics system
US7003588B1 (en) 2001-08-22 2006-02-21 Nintendo Co., Ltd. Peripheral devices for a video game system
DE102005030598B4 (de) * 2005-06-30 2007-12-13 Nokia Siemens Networks Gmbh & Co.Kg Verfahren und Einrichtung zur Überprüfung des Zuschaltens einer positiven Versorgungsspannung auf eine mehrere Adern umfassende Teilnehmeranschlussleitung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911517C2 (de) * 1979-03-23 1981-07-09 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlußschaltung mit Erdtasten- und Isolationsfehlerindikation
DE2938946A1 (de) * 1979-09-26 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur verhinderung der nachteiligen auswirkung von wechselspannungsanteilen bei der registrierung des schaltzustandes in einem insbesondere durch teilnehmeranschlussleitungen in fernsprechvermittlungsanlagen gebildeten schaltkreis
DE2939009A1 (de) * 1979-09-26 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur feststellung des schaltzustandes einer teilnehmeranschlussleitung in fernsprechvermittlungsanlagen
DE3036686C2 (de) * 1980-09-29 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlußschaltung
US4396805A (en) * 1981-09-21 1983-08-02 Siemens Corporation Ring trip detector for a subscriber line interface circuit
US4446338A (en) * 1982-07-12 1984-05-01 Northern Telecom Limited Telephone lines status sensor

Also Published As

Publication number Publication date
US4562308A (en) 1985-12-31
DE3207318C2 (xx) 1990-06-07
EP0087784B1 (de) 1987-06-24
EP0087784A3 (en) 1984-12-05
DE3207318A1 (de) 1983-09-08
JPS58162187A (ja) 1983-09-26
ATE28019T1 (de) 1987-07-15
EP0087784A2 (de) 1983-09-07

Similar Documents

Publication Publication Date Title
JPS54136166A (en) Semiconductor switch and telephone subscriber*s line circuit
JPS5746531A (en) Voltage controlled semiconductor switch and voltage converter circuit using same
EP0217330A3 (en) Line switching circuit for cordless telephone
ZA831355B (en) A subscriber connection circuit comprising feed resistors which can be bridged and an indication circuit which effects different indications
JPS57192076A (en) Integrated circuit type switching device
GB2068613B (en) Acoustically operable electrical switching circuits
JPS57147328A (en) Input circuit
JPS5617416A (en) Nonninstantaneous break voltage switching circuit
JPS57176839A (en) Switching circuit
HK69484A (en) Switching circuit
GB2059227B (en) Complementary characteristics switching circuit
DE3071790D1 (en) Thyristor for low loss switching of small impulses
GB8402400D0 (en) Switching circuit
SE8300257D0 (sv) Telekommunikationsterminal
DE3481363D1 (de) Digitaler signal-umschaltkreis.
AU8030182A (en) Switching circuit
JPS57164740A (en) Copying apparatus
JPS5221653A (en) Dc voltage converter
GB2123175B (en) Digital time switching arrangement
JPS55148321A (en) Dc circuit switching device
EP0100842A3 (en) Circuit switching arrangement
JPS52156331A (en) Dccdc converter switching circuit
JPS51138375A (en) Monolithic integrated threshold switching circuit
JPS57178453A (en) Switch mechanism
JPS57211596A (en) Automatically switching circuit of remote operation stop device