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FR593566A - Remote control device particularly applicable to telephone lines in public networks - Google Patents

Remote control device particularly applicable to telephone lines in public networks

Info

Publication number
FR593566A
FR593566A FR593566DA FR593566A FR 593566 A FR593566 A FR 593566A FR 593566D A FR593566D A FR 593566DA FR 593566 A FR593566 A FR 593566A
Authority
FR
France
Prior art keywords
control device
remote control
particularly applicable
telephone lines
public networks
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)
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR593566A publication Critical patent/FR593566A/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)
  • Devices For Supply Of Signal Current (AREA)
FR593566D 1924-04-28 1924-04-28 Remote control device particularly applicable to telephone lines in public networks Expired FR593566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR478992X 1924-04-28

Publications (1)

Publication Number Publication Date
FR593566A true FR593566A (en) 1925-08-26

Family

ID=8903325

Family Applications (1)

Application Number Title Priority Date Filing Date
FR593566D Expired FR593566A (en) 1924-04-28 1924-04-28 Remote control device particularly applicable to telephone lines in public networks

Country Status (2)

Country Link
DE (1) DE478992C (en)
FR (1) FR593566A (en)

Also Published As

Publication number Publication date
DE478992C (en) 1929-07-11

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