FR1022028A - Voice frequency signaler - Google Patents

Voice frequency signaler

Info

Publication number
FR1022028A
FR1022028A FR1022028DA FR1022028A FR 1022028 A FR1022028 A FR 1022028A FR 1022028D A FR1022028D A FR 1022028DA FR 1022028 A FR1022028 A FR 1022028A
Authority
FR
France
Prior art keywords
signaler
voice frequency
voice
frequency
frequency signaler
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Pierre Durand
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 filed Critical
Application granted granted Critical
Publication of FR1022028A publication Critical patent/FR1022028A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR1022028D 1950-07-13 1950-07-13 Voice frequency signaler Expired FR1022028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1022028T 1950-07-13

Publications (1)

Publication Number Publication Date
FR1022028A true FR1022028A (en) 1953-02-26

Family

ID=9577368

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022028D Expired FR1022028A (en) 1950-07-13 1950-07-13 Voice frequency signaler

Country Status (1)

Country Link
FR (1) FR1022028A (en)

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