BE569223A - - Google Patents

Info

Publication number
BE569223A
BE569223A BE569223DA BE569223A BE 569223 A BE569223 A BE 569223A BE 569223D A BE569223D A BE 569223DA BE 569223 A BE569223 A BE 569223A
Authority
BE
Belgium
Prior art keywords
line
circuit
voice
frequency
arrangement according
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE569223A publication Critical patent/BE569223A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/26Devices for calling a subscriber
    • H04M1/30Devices which can set up and transmit only one digit at a time
    • H04M1/50Devices 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)
BE569223D BE569223A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE569223A true BE569223A (enrdf_load_stackoverflow)

Family

ID=188268

Family Applications (1)

Application Number Title Priority Date Filing Date
BE569223D BE569223A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE569223A (enrdf_load_stackoverflow)

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