FR2161723A5 - - Google Patents

Info

Publication number
FR2161723A5
FR2161723A5 FR7241091A FR7241091A FR2161723A5 FR 2161723 A5 FR2161723 A5 FR 2161723A5 FR 7241091 A FR7241091 A FR 7241091A FR 7241091 A FR7241091 A FR 7241091A FR 2161723 A5 FR2161723 A5 FR 2161723A5
Authority
FR
France
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
FR7241091A
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.)
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
Priority claimed from DE19712157559 external-priority patent/DE2157559C3/de
Priority claimed from DE19712157558 external-priority patent/DE2157558C3/de
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR2161723A5 publication Critical patent/FR2161723A5/fr
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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • 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
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR7241091A 1971-11-19 1972-11-20 Expired FR2161723A5 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712157559 DE2157559C3 (de) 1971-11-19 1971-11-19 Mehrfrequenzcodesignalempfanger für Fernmelde-, insbesondere Fernsprechanlagen
DE19712157558 DE2157558C3 (de) 1971-11-19 1971-11-19 Mehrfrequenzcodesignalempfänger in Fernmelde-, insbesondere Fernsprechanlagen

Publications (1)

Publication Number Publication Date
FR2161723A5 true FR2161723A5 (de) 1973-07-06

Family

ID=25762045

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7241091A Expired FR2161723A5 (de) 1971-11-19 1972-11-20

Country Status (1)

Country Link
FR (1) FR2161723A5 (de)

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Legal Events

Date Code Title Description
ST Notification of lapse