BE804753A - Dispositif transmetteur de numerotation par niveaux de tension - Google Patents

Dispositif transmetteur de numerotation par niveaux de tension

Info

Publication number
BE804753A
BE804753A BE1005356A BE1005356A BE804753A BE 804753 A BE804753 A BE 804753A BE 1005356 A BE1005356 A BE 1005356A BE 1005356 A BE1005356 A BE 1005356A BE 804753 A BE804753 A BE 804753A
Authority
BE
Belgium
Prior art keywords
voltage level
transmitter device
level numbering
numbering
transmitter
Prior art date
Application number
BE1005356A
Other languages
English (en)
French (fr)
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
Publication of BE804753A publication Critical patent/BE804753A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of DC signals of alternating polarity, coded pulses or impedance dialling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Input From Keyboards Or The Like (AREA)
BE1005356A 1972-09-21 1973-09-12 Dispositif transmetteur de numerotation par niveaux de tension BE804753A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7233529A FR2199921A5 (en(2012)) 1972-09-21 1972-09-21

Publications (1)

Publication Number Publication Date
BE804753A true BE804753A (fr) 1974-03-12

Family

ID=9104608

Family Applications (1)

Application Number Title Priority Date Filing Date
BE1005356A BE804753A (fr) 1972-09-21 1973-09-12 Dispositif transmetteur de numerotation par niveaux de tension

Country Status (7)

Country Link
BE (1) BE804753A (en(2012))
CH (1) CH578809A5 (en(2012))
DE (1) DE2345757A1 (en(2012))
FR (1) FR2199921A5 (en(2012))
GB (1) GB1423668A (en(2012))
IT (1) IT993358B (en(2012))
NL (1) NL7313088A (en(2012))

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036801C2 (de) * 1980-09-30 1982-08-26 Ritto-Werk Loh GmbH & Co KG, 6348 Herborn Schaltungsanordnung zur Übertragung von Gleichstrom-Kennzeichen über eine zweiradrige Leitung von einer Sendestelle zu einer Empfangsstelle, insbesondere von einer Sprechstelle zu der Zentrale einer Sprechanlage
GB8614199D0 (en) * 1986-06-11 1986-07-16 Salplex Ltd Information handling & control systems

Also Published As

Publication number Publication date
FR2199921A5 (en(2012)) 1974-04-12
DE2345757A1 (de) 1974-03-28
IT993358B (it) 1975-09-30
NL7313088A (en(2012)) 1974-03-25
GB1423668A (en) 1976-02-04
CH578809A5 (en(2012)) 1976-08-13

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