FR634824A - Method of establishing telephone communications - Google Patents

Method of establishing telephone communications

Info

Publication number
FR634824A
FR634824A FR634824DA FR634824A FR 634824 A FR634824 A FR 634824A FR 634824D A FR634824D A FR 634824DA FR 634824 A FR634824 A FR 634824A
Authority
FR
France
Prior art keywords
telephone communications
establishing telephone
establishing
communications
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.)
Mix & Genest Telephon & Telegr
Original Assignee
Mix & Genest Telephon & Telegr
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 Mix & Genest Telephon & Telegr filed Critical Mix & Genest Telephon & Telegr
Application granted granted Critical
Publication of FR634824A publication Critical patent/FR634824A/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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling 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)
FR634824D 1927-05-21 1927-05-21 Method of establishing telephone communications Expired FR634824A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR634824T 1927-05-21

Publications (1)

Publication Number Publication Date
FR634824A true FR634824A (en) 1928-02-27

Family

ID=8993844

Family Applications (1)

Application Number Title Priority Date Filing Date
FR634824D Expired FR634824A (en) 1927-05-21 1927-05-21 Method of establishing telephone communications

Country Status (1)

Country Link
FR (1) FR634824A (en)

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