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AU466639B2 - Multitone detector - Google Patents

Multitone detector

Info

Publication number
AU466639B2
AU466639B2 AU43142/72A AU4314272A AU466639B2 AU 466639 B2 AU466639 B2 AU 466639B2 AU 43142/72 A AU43142/72 A AU 43142/72A AU 4314272 A AU4314272 A AU 4314272A AU 466639 B2 AU466639 B2 AU 466639B2
Authority
AU
Australia
Prior art keywords
multitone
detector
multitone detector
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
AU43142/72A
Other versions
AU4314272A (en
Inventor
Spalding Clive Chaloner Davidian
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.)
Davidian Spalding
Original Assignee
Davidian Spalding
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 Davidian Spalding filed Critical Davidian Spalding
Priority to AU43142/72A priority Critical patent/AU466639B2/en
Publication of AU4314272A publication Critical patent/AU4314272A/en
Application granted granted Critical
Publication of AU466639B2 publication Critical patent/AU466639B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
AU43142/72A 1971-06-07 1971-06-07 Multitone detector Expired AU466639B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43142/72A AU466639B2 (en) 1971-06-07 1971-06-07 Multitone detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU43142/72A AU466639B2 (en) 1971-06-07 1971-06-07 Multitone detector

Publications (2)

Publication Number Publication Date
AU4314272A AU4314272A (en) 1973-12-13
AU466639B2 true AU466639B2 (en) 1975-11-06

Family

ID=3730354

Family Applications (1)

Application Number Title Priority Date Filing Date
AU43142/72A Expired AU466639B2 (en) 1971-06-07 1971-06-07 Multitone detector

Country Status (1)

Country Link
AU (1) AU466639B2 (en)

Also Published As

Publication number Publication date
AU4314272A (en) 1973-12-13

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