AT295607B - Method for the parallel arrhythmic transmission of characters formed by two simultaneously transmitted tone frequencies in the telephone dial-up network - Google Patents

Method for the parallel arrhythmic transmission of characters formed by two simultaneously transmitted tone frequencies in the telephone dial-up network

Info

Publication number
AT295607B
AT295607B AT320468A AT320468A AT295607B AT 295607 B AT295607 B AT 295607B AT 320468 A AT320468 A AT 320468A AT 320468 A AT320468 A AT 320468A AT 295607 B AT295607 B AT 295607B
Authority
AT
Austria
Prior art keywords
arrhythmic
network
transmission
parallel
simultaneously transmitted
Prior art date
Application number
AT320468A
Other languages
German (de)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT295607B publication Critical patent/AT295607B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/24—Half-wave signalling systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
AT320468A 1967-05-09 1968-04-02 Method for the parallel arrhythmic transmission of characters formed by two simultaneously transmitted tone frequencies in the telephone dial-up network AT295607B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0109788 1967-05-09

Publications (1)

Publication Number Publication Date
AT295607B true AT295607B (en) 1972-01-10

Family

ID=7529778

Family Applications (1)

Application Number Title Priority Date Filing Date
AT320468A AT295607B (en) 1967-05-09 1968-04-02 Method for the parallel arrhythmic transmission of characters formed by two simultaneously transmitted tone frequencies in the telephone dial-up network

Country Status (8)

Country Link
AT (1) AT295607B (en)
BE (1) BE714898A (en)
CH (1) CH473514A (en)
CS (1) CS159744B2 (en)
DE (1) DE1287623B (en)
FR (1) FR1594554A (en)
NL (1) NL6806394A (en)
SE (1) SE339493B (en)

Also Published As

Publication number Publication date
FR1594554A (en) 1970-06-08
CH473514A (en) 1969-05-31
SE339493B (en) 1971-10-11
DE1287623B (en) 1969-01-23
CS159744B2 (en) 1975-01-31
NL6806394A (en) 1968-11-11
BE714898A (en) 1968-11-12

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee