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Thread: DTMF Digit Frequencies

  1. #1
    agauthier Guest

    Default DTMF Digit Frequencies

    These are the standard DTMF digit frequencies:

    941 - 1336 -> DTMF 0
    697 - 1209 -> DTMF 1
    697 - 1336 -> DTMF 2
    697 - 1477 -> DTMF 3
    770 - 1209 -> DTMF 4
    770 - 1336 -> DTMF 5
    770 - 1477 -> DTMF 6
    852 - 1209 -> DTMF 7
    852 - 1336 -> DTMF 8
    852 - 1477 -> DTMF 9
    941 - 1209 -> DTMF #
    941 - 1477 -> DTMF *

  2. #2
    eurovoice Guest

    Default

    ... and don't forget that your PIKA card may also detect one of the less common DTMF 'digits'

    A = 697Hz + 1633Hz
    B = 770Hz + 1633Hz
    C = 852Hz + 1633Hz
    D = 941Hz + 1633Hz

    Martin.

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