IT976038B - Gruppo elettronico di sorveglianza delle cadenze di segnali - Google Patents

Gruppo elettronico di sorveglianza delle cadenze di segnali

Info

Publication number
IT976038B
IT976038B IT7091672A IT7091672A IT976038B IT 976038 B IT976038 B IT 976038B IT 7091672 A IT7091672 A IT 7091672A IT 7091672 A IT7091672 A IT 7091672A IT 976038 B IT976038 B IT 976038B
Authority
IT
Italy
Prior art keywords
cadences
surveillance
signal
electronic group
electronic
Prior art date
Application number
IT7091672A
Other languages
English (en)
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of IT976038B publication Critical patent/IT976038B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Manipulation Of Pulses (AREA)
IT7091672A 1971-12-15 1972-12-14 Gruppo elettronico di sorveglianza delle cadenze di segnali IT976038B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7145061A FR2165039A5 (it) 1971-12-15 1971-12-15

Publications (1)

Publication Number Publication Date
IT976038B true IT976038B (it) 1974-08-20

Family

ID=9087518

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7091672A IT976038B (it) 1971-12-15 1972-12-14 Gruppo elettronico di sorveglianza delle cadenze di segnali

Country Status (8)

Country Link
BE (1) BE792551A (it)
CH (1) CH568686A5 (it)
DE (1) DE2260760A1 (it)
FR (1) FR2165039A5 (it)
GB (1) GB1408796A (it)
IT (1) IT976038B (it)
NL (1) NL7217081A (it)
SE (1) SE389252B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2440162C2 (de) * 1974-08-21 1981-12-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum signaltechnisch sicheren Überwachen von periodischen Impulsen
US4117348A (en) * 1977-07-11 1978-09-26 Rockwell International Corporation Multi-phase clock monitor circuit
DE2945984C2 (de) * 1979-11-14 1982-05-27 Eurosil GmbH, 8000 München Schaltungsanordnung zur Signalisierung des Ausfalls periodischer Impulssignale

Also Published As

Publication number Publication date
SE389252B (sv) 1976-10-25
NL7217081A (it) 1973-06-19
FR2165039A5 (it) 1973-08-03
BE792551A (fr) 1973-06-12
GB1408796A (en) 1975-10-08
CH568686A5 (it) 1975-10-31
DE2260760A1 (de) 1973-06-20

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