IT978365B - Circuito per la sorveglianza di collegamenti per impianti di commutazione telegrafica - Google Patents

Circuito per la sorveglianza di collegamenti per impianti di commutazione telegrafica

Info

Publication number
IT978365B
IT978365B IT7319478A IT1947873A IT978365B IT 978365 B IT978365 B IT 978365B IT 7319478 A IT7319478 A IT 7319478A IT 1947873 A IT1947873 A IT 1947873A IT 978365 B IT978365 B IT 978365B
Authority
IT
Italy
Prior art keywords
surveillance
connections
circuit
switching systems
telegraphic
Prior art date
Application number
IT7319478A
Other languages
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
Application granted granted Critical
Publication of IT978365B publication Critical patent/IT978365B/it

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)
IT7319478A 1972-01-24 1973-01-23 Circuito per la sorveglianza di collegamenti per impianti di commutazione telegrafica IT978365B (it)

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
IT978365B true IT978365B (it) 1974-09-20

Family

ID=5833832

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7319478A IT978365B (it) 1972-01-24 1973-01-23 Circuito per la sorveglianza di collegamenti per impianti di commutazione telegrafica

Country Status (15)

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

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 (it) * 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 (it) * 1968-12-31 1972-08-28

Also Published As

Publication number Publication date
LU66874A1 (it) 1973-07-27
ZA728424B (en) 1973-08-29
CH546522A (de) 1974-02-28
DE2203180C3 (de) 1975-06-26
DE2203180A1 (de) 1973-08-09
US3887824A (en) 1975-06-03
DK140915C (da) 1980-05-19
AT320751B (de) 1975-02-25
DK140915B (da) 1979-12-03
AR194976A1 (es) 1973-08-30
FR2169038B1 (it) 1977-07-22
GB1405154A (en) 1975-09-03
FR2169038A1 (it) 1973-09-07
BR7300519D0 (pt) 1973-09-20
DE2203180B2 (de) 1974-11-14
BE793396A (fr) 1973-06-28
SE376705B (it) 1975-06-02
NL7300534A (it) 1973-07-26

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