FR1102901A - Electrical signaling systems for the transmission of code signals using alternating currents - Google Patents

Electrical signaling systems for the transmission of code signals using alternating currents

Info

Publication number
FR1102901A
FR1102901A FR1102901DA FR1102901A FR 1102901 A FR1102901 A FR 1102901A FR 1102901D A FR1102901D A FR 1102901DA FR 1102901 A FR1102901 A FR 1102901A
Authority
FR
France
Prior art keywords
transmission
alternating currents
code signals
signaling systems
electrical signaling
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
Martinus Den Hertog
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1102901A publication Critical patent/FR1102901A/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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR1102901D 1948-04-23 1948-04-23 Electrical signaling systems for the transmission of code signals using alternating currents Expired FR1102901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102901T 1948-04-23

Publications (1)

Publication Number Publication Date
FR1102901A true FR1102901A (en) 1955-10-27

Family

ID=9621890

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1102901D Expired FR1102901A (en) 1948-04-23 1948-04-23 Electrical signaling systems for the transmission of code signals using alternating currents

Country Status (1)

Country Link
FR (1) FR1102901A (en)

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