BE472516A - - Google Patents

Info

Publication number
BE472516A
BE472516A BE472516DA BE472516A BE 472516 A BE472516 A BE 472516A BE 472516D A BE472516D A BE 472516DA BE 472516 A BE472516 A BE 472516A
Authority
BE
Belgium
Prior art keywords
relay
pulses
relays
activated
signals
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE472516A publication Critical patent/BE472516A/fr

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • G08C19/16Electric signal transmission systems in which transmission is by pulses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/442Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4426Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using two or more signalling frequencies, transmitted in succession or simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
BE472516D BE472516A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE472516A true BE472516A (enrdf_load_stackoverflow)

Family

ID=122071

Family Applications (1)

Application Number Title Priority Date Filing Date
BE472516D BE472516A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE472516A (enrdf_load_stackoverflow)

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