CH546522A - Verbindungsueberwachungsschaltung fuer fernschreibvermittlungsanlagen. - Google Patents

Verbindungsueberwachungsschaltung fuer fernschreibvermittlungsanlagen.

Info

Publication number
CH546522A
CH546522A CH1708072A CH546522DA CH546522A CH 546522 A CH546522 A CH 546522A CH 1708072 A CH1708072 A CH 1708072A CH 546522D A CH546522D A CH 546522DA CH 546522 A CH546522 A CH 546522A
Authority
CH
Switzerland
Prior art keywords
monitoring circuit
telephone switching
switching systems
connection monitoring
connection
Prior art date
Application number
CH1708072A
Other languages
German (de)
English (en)
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 CH546522A publication Critical patent/CH546522A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Emergency Protection Circuit Devices (AREA)
CH1708072A 1972-01-24 1972-11-23 Verbindungsueberwachungsschaltung fuer fernschreibvermittlungsanlagen. CH546522A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2203180A DE2203180C3 (de) 1972-01-24 1972-01-24 Verbindungsüberwachungsschaltung

Publications (1)

Publication Number Publication Date
CH546522A true CH546522A (de) 1974-02-28

Family

ID=5833832

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1708072A CH546522A (de) 1972-01-24 1972-11-23 Verbindungsueberwachungsschaltung fuer fernschreibvermittlungsanlagen.

Country Status (15)

Country Link
US (1) US3887824A (xx)
AR (1) AR194976A1 (xx)
AT (1) AT320751B (xx)
BE (1) BE793396A (xx)
BR (1) BR7300519D0 (xx)
CH (1) CH546522A (xx)
DE (1) DE2203180C3 (xx)
DK (1) DK140915C (xx)
FR (1) FR2169038B1 (xx)
GB (1) GB1405154A (xx)
IT (1) IT978365B (xx)
LU (1) LU66874A1 (xx)
NL (1) NL7300534A (xx)
SE (1) SE376705B (xx)
ZA (1) ZA728424B (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037050A (en) * 1976-05-26 1977-07-19 Bell Telephone Laboratories, Incorporated Fault isolation in communications circuits
US4084070A (en) * 1977-01-21 1978-04-11 Rca Corporation Overcurrent protection circuit
DE4212742A1 (de) * 1992-04-16 1993-10-21 Bayerische Motoren Werke Ag Verfahren zur Fehlererkennung bei einem Datenbus
FR2787584B1 (fr) * 1998-12-18 2001-02-09 Atral Dispositif de detection de coupure d'une ligne electrique, en particulier d'une ligne telephonique
US6587050B2 (en) 2001-07-24 2003-07-01 Eaton Corporation Oscillator activated continuity testing switch
US6653846B2 (en) 2001-09-14 2003-11-25 Eaton Corporation Multifunction circuit continuity and sensor tester

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949547A (en) * 1958-06-13 1960-08-16 Bell Telephone Labor Inc Delay timer
BE620605A (xx) * 1961-03-07
US3317668A (en) * 1963-08-15 1967-05-02 Teletype Corp Open line and busy line detection circuit
US3275850A (en) * 1964-02-11 1966-09-27 Itt Timer
US3354323A (en) * 1964-11-27 1967-11-21 Test Corp Comp Pulse generator with direct connection to output pulse former and time delay in branch circuit
US3414735A (en) * 1965-12-03 1968-12-03 Conductron Corp Variable time constant learning means
DE1614530C2 (de) * 1967-05-23 1975-11-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur zeitabhängigen Steuerung von Relais
FR1605049A (xx) * 1968-12-31 1972-08-28

Also Published As

Publication number Publication date
FR2169038A1 (xx) 1973-09-07
AR194976A1 (es) 1973-08-30
AT320751B (de) 1975-02-25
FR2169038B1 (xx) 1977-07-22
DK140915C (da) 1980-05-19
LU66874A1 (xx) 1973-07-27
US3887824A (en) 1975-06-03
DK140915B (da) 1979-12-03
NL7300534A (xx) 1973-07-26
BE793396A (fr) 1973-06-28
IT978365B (it) 1974-09-20
GB1405154A (en) 1975-09-03
ZA728424B (en) 1973-08-29
SE376705B (xx) 1975-06-02
DE2203180B2 (de) 1974-11-14
BR7300519D0 (pt) 1973-09-20
DE2203180A1 (de) 1973-08-09
DE2203180C3 (de) 1975-06-26

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Legal Events

Date Code Title Description
PL Patent ceased