NL66179C - - Google Patents

Info

Publication number
NL66179C
NL66179C NL66179DA NL66179C NL 66179 C NL66179 C NL 66179C NL 66179D A NL66179D A NL 66179DA NL 66179 C NL66179 C NL 66179C
Authority
NL
Netherlands
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 NL66179C publication Critical patent/NL66179C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • 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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
NL66179D 1943-12-04 NL66179C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR54361T 1943-12-04

Publications (1)

Publication Number Publication Date
NL66179C true NL66179C (en:Method)

Family

ID=32947058

Family Applications (1)

Application Number Title Priority Date Filing Date
NL66179D NL66179C (en:Method) 1943-12-04

Country Status (1)

Country Link
NL (1) NL66179C (en:Method)

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