BE336760A - - Google Patents

Info

Publication number
BE336760A
BE336760A BE336760DA BE336760A BE 336760 A BE336760 A BE 336760A BE 336760D A BE336760D A BE 336760DA BE 336760 A BE336760 A BE 336760A
Authority
BE
Belgium
Prior art keywords
circuit
circuits
lines
relay
telephone system
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE336760A publication Critical patent/BE336760A/fr

Links

Classifications

    • 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
    • H04Q1/4423Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE336760D BE336760A (https=)

Publications (1)

Publication Number Publication Date
BE336760A true BE336760A (https=)

Family

ID=14995

Family Applications (1)

Application Number Title Priority Date Filing Date
BE336760D BE336760A (https=)

Country Status (1)

Country Link
BE (1) BE336760A (https=)

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