AT292073B - Fernsprechapparat für die tonfrequente Tastwahl - Google Patents

Fernsprechapparat für die tonfrequente Tastwahl

Info

Publication number
AT292073B
AT292073B AT705869A AT705869A AT292073B AT 292073 B AT292073 B AT 292073B AT 705869 A AT705869 A AT 705869A AT 705869 A AT705869 A AT 705869A AT 292073 B AT292073 B AT 292073B
Authority
AT
Austria
Prior art keywords
telephone
touch
tone dialing
dialing
tone
Prior art date
Application number
AT705869A
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 AT292073B publication Critical patent/AT292073B/de

Links

Classifications

    • 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)
  • Monitoring And Testing Of Exchanges (AREA)
AT705869A 1968-08-29 1969-07-23 Fernsprechapparat für die tonfrequente Tastwahl AT292073B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681762805 DE1762805A1 (de) 1968-08-29 1968-08-29 Fernsprechapparat fuer die tonfrequente Tastwahl

Publications (1)

Publication Number Publication Date
AT292073B true AT292073B (de) 1971-08-10

Family

ID=5697215

Family Applications (1)

Application Number Title Priority Date Filing Date
AT705869A AT292073B (de) 1968-08-29 1969-07-23 Fernsprechapparat für die tonfrequente Tastwahl

Country Status (2)

Country Link
AT (1) AT292073B (de)
DE (1) DE1762805A1 (de)

Also Published As

Publication number Publication date
DE1762805A1 (de) 1970-09-17

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Legal Events

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