AT238781B - Tonwahlsystem - Google Patents

Tonwahlsystem

Info

Publication number
AT238781B
AT238781B AT737261A AT737261A AT238781B AT 238781 B AT238781 B AT 238781B AT 737261 A AT737261 A AT 737261A AT 737261 A AT737261 A AT 737261A AT 238781 B AT238781 B AT 238781B
Authority
AT
Austria
Prior art keywords
dialing system
tone dialing
tone
dialing
Prior art date
Application number
AT737261A
Other languages
English (en)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of AT238781B publication Critical patent/AT238781B/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
AT737261A 1960-09-30 1961-09-30 Tonwahlsystem AT238781B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR840002A FR1275523A (fr) 1960-09-30 1960-09-30 Système de numérotation téléphonique à fréquences vocales

Publications (1)

Publication Number Publication Date
AT238781B true AT238781B (de) 1965-02-25

Family

ID=8739954

Family Applications (1)

Application Number Title Priority Date Filing Date
AT737261A AT238781B (de) 1960-09-30 1961-09-30 Tonwahlsystem

Country Status (3)

Country Link
AT (1) AT238781B (de)
FR (1) FR1275523A (de)
GB (1) GB949728A (de)

Also Published As

Publication number Publication date
GB949728A (en) 1964-02-19
FR1275523A (fr) 1961-11-10

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