AT247923B - Arrangement for the transmission of multi-frequency code keypad dialing characters in telecommunication systems, in particular telephone systems - Google Patents

Arrangement for the transmission of multi-frequency code keypad dialing characters in telecommunication systems, in particular telephone systems

Info

Publication number
AT247923B
AT247923B AT226965A AT226965A AT247923B AT 247923 B AT247923 B AT 247923B AT 226965 A AT226965 A AT 226965A AT 226965 A AT226965 A AT 226965A AT 247923 B AT247923 B AT 247923B
Authority
AT
Austria
Prior art keywords
systems
arrangement
transmission
frequency code
particular telephone
Prior art date
Application number
AT226965A
Other languages
German (de)
Original Assignee
Telefunken Patent
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 Telefunken Patent filed Critical Telefunken Patent
Application granted granted Critical
Publication of AT247923B publication Critical patent/AT247923B/en

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)
  • Telephonic Communication Services (AREA)
AT226965A 1964-03-14 1965-03-12 Arrangement for the transmission of multi-frequency code keypad dialing characters in telecommunication systems, in particular telephone systems AT247923B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET25822A DE1194913B (en) 1964-03-14 1964-03-14 Circuit arrangement for the transmission of multi-frequency code keypad selection characters in telecommunications, in particular telephone systems

Publications (1)

Publication Number Publication Date
AT247923B true AT247923B (en) 1966-07-11

Family

ID=7552332

Family Applications (1)

Application Number Title Priority Date Filing Date
AT226965A AT247923B (en) 1964-03-14 1965-03-12 Arrangement for the transmission of multi-frequency code keypad dialing characters in telecommunication systems, in particular telephone systems

Country Status (2)

Country Link
AT (1) AT247923B (en)
DE (1) DE1194913B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1913940C2 (en) * 1969-03-19 1971-02-18 Haagen & Rinau Mixing device
DE2606720C2 (en) * 1976-02-19 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for subscriber stations with tone-frequency keypad dialing devices in telecommunications, in particular telephone systems
DE2606794C2 (en) * 1976-02-19 1984-12-13 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for subscriber stations with keypad in telecommunication systems, in particular telephone systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946377C (en) * 1941-03-13 1956-08-02 Siemens Ag Electromagnetic relay arrangement with delay devices

Also Published As

Publication number Publication date
DE1194913B (en) 1965-06-16

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