BE516817A - - Google Patents

Info

Publication number
BE516817A
BE516817A BE516817DA BE516817A BE 516817 A BE516817 A BE 516817A BE 516817D A BE516817D A BE 516817DA BE 516817 A BE516817 A BE 516817A
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 BE516817A publication Critical patent/BE516817A/xx

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
    • H04Q1/4465—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)
  • Amplifiers (AREA)
BE516817D 1952-01-11 BE516817A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB956134X 1952-01-11

Publications (1)

Publication Number Publication Date
BE516817A true BE516817A (ja)

Family

ID=10786438

Family Applications (1)

Application Number Title Priority Date Filing Date
BE516817D BE516817A (ja) 1952-01-11

Country Status (2)

Country Link
BE (1) BE516817A (ja)
DE (1) DE956134C (ja)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547023A (en) * 1947-05-23 1951-04-03 Motorola Inc Selective calling system
FR1015224A (fr) * 1950-03-28 1952-08-29 Telecommunications Sa Signaleur retransmetteur d'impulsions

Also Published As

Publication number Publication date
DE956134C (de) 1957-01-17

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