FR614476A - Call arrangement for telephone systems - Google Patents

Call arrangement for telephone systems

Info

Publication number
FR614476A
FR614476A FR614476DA FR614476A FR 614476 A FR614476 A FR 614476A FR 614476D A FR614476D A FR 614476DA FR 614476 A FR614476 A FR 614476A
Authority
FR
France
Prior art keywords
telephone systems
call arrangement
call
arrangement
telephone
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR614476A publication Critical patent/FR614476A/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)
FR614476D 1926-04-13 1926-04-13 Call arrangement for telephone systems Expired FR614476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR614476T 1926-04-13

Publications (1)

Publication Number Publication Date
FR614476A true FR614476A (en) 1926-12-15

Family

ID=8980245

Family Applications (1)

Application Number Title Priority Date Filing Date
FR614476D Expired FR614476A (en) 1926-04-13 1926-04-13 Call arrangement for telephone systems

Country Status (1)

Country Link
FR (1) FR614476A (en)

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