CH430809A - Transmission device for multi-frequency code selection - Google Patents

Transmission device for multi-frequency code selection

Info

Publication number
CH430809A
CH430809A CH1481965A CH1481965A CH430809A CH 430809 A CH430809 A CH 430809A CH 1481965 A CH1481965 A CH 1481965A CH 1481965 A CH1481965 A CH 1481965A CH 430809 A CH430809 A CH 430809A
Authority
CH
Switzerland
Prior art keywords
transmission device
frequency code
code selection
selection
frequency
Prior art date
Application number
CH1481965A
Other languages
German (de)
Inventor
Ender Urs
Haemmerli Samuel
Scheier Hans
Weisigk Guenter
Zuebli Fritz
Original Assignee
Siemens Ag Albis
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 Albis filed Critical Siemens Ag Albis
Priority to CH1481965A priority Critical patent/CH430809A/en
Priority to DE1966A0053368 priority patent/DE1282099B/en
Priority to NL6613506A priority patent/NL6613506A/xx
Publication of CH430809A publication Critical patent/CH430809A/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)
  • Transmitters (AREA)
CH1481965A 1965-10-27 1965-10-27 Transmission device for multi-frequency code selection CH430809A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH1481965A CH430809A (en) 1965-10-27 1965-10-27 Transmission device for multi-frequency code selection
DE1966A0053368 DE1282099B (en) 1965-10-27 1966-08-29 Transmission device for multi-frequency code selection
NL6613506A NL6613506A (en) 1965-10-27 1966-09-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1481965A CH430809A (en) 1965-10-27 1965-10-27 Transmission device for multi-frequency code selection

Publications (1)

Publication Number Publication Date
CH430809A true CH430809A (en) 1967-02-28

Family

ID=4404067

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1481965A CH430809A (en) 1965-10-27 1965-10-27 Transmission device for multi-frequency code selection

Country Status (3)

Country Link
CH (1) CH430809A (en)
DE (1) DE1282099B (en)
NL (1) NL6613506A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL242923A (en) * 1958-09-08
DE1185665B (en) * 1963-09-14 1965-01-21 Standard Elektrik Lorenz Ag Key-operated multi-frequency tone generator

Also Published As

Publication number Publication date
NL6613506A (en) 1967-04-28
DE1282099B (en) 1968-11-07

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