#VTD - Tone Detection/Reporting Bit Settings

Bit Description                                                                   


0   0 = Disable DTMF tone capability;                                             


    1 = Enable DTMF tone capability (1).                                          



1   0 = Disable V.25 1300 Hz Calling tone capability;                             


    1 = Enable V. 25 1300 Hz Calling tone capability (1).                         



2   0 = Disable T.30 1100 Hz Facsimile Calling tone capability;                   


    1 = Enable T.30 1100 Hz Facsimile Calling tone capability (1).                



3   0 = Disable V.25/T.30 2100 Hz Answer tone capability;                         


    1 = Enable V.25/ T.30 2100 Hz Answer tone capability (1).                     



4   0 = Disable Bell 2225 Hz Answer tone capability;                              


    1 = Enable Bell 2225 Hz Answer tone capability (1).                           



5   0 = Disable call progress tone and cadence (e.g., busy and dial tone)         


    capability;                                                                    


    1 = Enable call progress tone and cadence (e.g., busy and dial tone)          


    capability (1).                                                                



6   Reserved.                                                                     
Note: (1) The modem detects this tone/cadence, and reports it via a shielded code to the DTE.

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