FR82199E - Improvements to multi-frequency signaling receiving systems - Google Patents

Improvements to multi-frequency signaling receiving systems

Info

Publication number
FR82199E
FR82199E FR908079A FR908079A FR82199E FR 82199 E FR82199 E FR 82199E FR 908079 A FR908079 A FR 908079A FR 908079 A FR908079 A FR 908079A FR 82199 E FR82199 E FR 82199E
Authority
FR
France
Prior art keywords
receiving systems
frequency signaling
signaling receiving
frequency
systems
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
FR908079A
Other languages
French (fr)
Inventor
Lorenz Gasser
Ernest Beyerle
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 DEST18261A external-priority patent/DE1141348B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR908079A priority Critical patent/FR82199E/en
Application granted granted Critical
Publication of FR82199E publication Critical patent/FR82199E/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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR908079A 1961-08-30 1962-08-29 Improvements to multi-frequency signaling receiving systems Expired FR82199E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR908079A FR82199E (en) 1961-08-30 1962-08-29 Improvements to multi-frequency signaling receiving systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST18261A DE1141348B (en) 1961-08-30 1961-08-30 Receiving device for an audio frequency code signal method with several signal frequency groups in telephone exchanges
FR908079A FR82199E (en) 1961-08-30 1962-08-29 Improvements to multi-frequency signaling receiving systems

Publications (1)

Publication Number Publication Date
FR82199E true FR82199E (en) 1964-01-04

Family

ID=25994054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR908079A Expired FR82199E (en) 1961-08-30 1962-08-29 Improvements to multi-frequency signaling receiving systems

Country Status (1)

Country Link
FR (1) FR82199E (en)

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