AU458997B2 - Apparatus for monitoring a communication and a detector therefor - Google Patents

Apparatus for monitoring a communication and a detector therefor

Info

Publication number
AU458997B2
AU458997B2 AU29415/71A AU2941571A AU458997B2 AU 458997 B2 AU458997 B2 AU 458997B2 AU 29415/71 A AU29415/71 A AU 29415/71A AU 2941571 A AU2941571 A AU 2941571A AU 458997 B2 AU458997 B2 AU 458997B2
Authority
AU
Australia
Prior art keywords
monitoring
communication
detector therefor
therefor
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
AU29415/71A
Other versions
AU2941571A (en
Inventor
Arthur Lewis John
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.)
Australian Telecommunications Commission
Original Assignee
Australian Telecommunications Commission
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 Australian Telecommunications Commission filed Critical Australian Telecommunications Commission
Priority to AU29415/71A priority Critical patent/AU458997B2/en
Publication of AU2941571A publication Critical patent/AU2941571A/en
Application granted granted Critical
Publication of AU458997B2 publication Critical patent/AU458997B2/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
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
AU29415/71A 1970-06-10 1970-06-10 Apparatus for monitoring a communication and a detector therefor Expired AU458997B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29415/71A AU458997B2 (en) 1970-06-10 1970-06-10 Apparatus for monitoring a communication and a detector therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU29415/71A AU458997B2 (en) 1970-06-10 1970-06-10 Apparatus for monitoring a communication and a detector therefor

Publications (2)

Publication Number Publication Date
AU2941571A AU2941571A (en) 1972-11-30
AU458997B2 true AU458997B2 (en) 1975-02-27

Family

ID=3717503

Family Applications (1)

Application Number Title Priority Date Filing Date
AU29415/71A Expired AU458997B2 (en) 1970-06-10 1970-06-10 Apparatus for monitoring a communication and a detector therefor

Country Status (1)

Country Link
AU (1) AU458997B2 (en)

Also Published As

Publication number Publication date
AU2941571A (en) 1972-11-30

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