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BE464665A - - Google Patents

Info

Publication number
BE464665A
BE464665A BE464665DA BE464665A BE 464665 A BE464665 A BE 464665A BE 464665D A BE464665D A BE 464665DA BE 464665 A BE464665 A BE 464665A
Authority
BE
Belgium
Application number
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.)
Publication of BE464665A publication Critical patent/BE464665A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • 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
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
BE464665D 1945-04-19 BE464665A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE610790X 1945-04-19

Publications (1)

Publication Number Publication Date
BE464665A true BE464665A (fr)

Family

ID=20313046

Family Applications (1)

Application Number Title Priority Date Filing Date
BE464665D BE464665A (fr) 1945-04-19

Country Status (2)

Country Link
BE (1) BE464665A (fr)
GB (1) GB610790A (fr)

Also Published As

Publication number Publication date
GB610790A (en) 1948-10-20

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