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Voice API for Windows Operating Systems Library Reference — November 2003 193
dial an ASCIIZ string — dx_dial( )
ATDX_CONNTYPE( )
Returns the connection type for a completed call
ATDX_CPERROR( )
Returns call progress analysis error
ATDX_CPTERM( )
Returns last call progress analysis termination
ATDX_CRTNID( )
Returns tone identifier
ATDX_DTNFAIL( )
Returns dial tone fail character
ATDX_FRQDUR( )
Returns duration of first frequency detected
ATDX_FRQDUR2( )
Returns duration of second frequency detected
ATDX_FRQDUR3( )
Returns duration of third frequency detected
ATDX_FRQHZ( )
Returns frequency of first detected tone in Hz
ATDX_FRQHZ2( )
Returns frequency of second detected tone in Hz
ATDX_FRQHZ3( )
Returns frequency of third detected tone in Hz
ATDX_FRQOUT( )
Returns percent of frequency out of bounds
ATDX_LONGLOW( )
Returns duration of longer silence
ATDX_SHORTLOW( )
Returns duration of shorter silence
ATDX_SIZEHI( )
Returns duration of non-silence
!
!!
! Cautions
• If you attempt to dial a channel in MF mode and do not have MF capabilities on that channel,
DTMF tone dialing is used.
• Issuing a dx_stopch( ) on a channel that is dialing with call progress analysis disabled has no
effect on the dial, and will return 0. The digits specified in the dialstrp parameter will still be
dialed.
• Issuing a dx_stopch( ) on a channel that is dialing with call progress analysis enabled will
cause the dialing to complete, but call progress analysis will not be executed. The digits
specified in the dialstrp parameter will be dialed. Any call progress analysis information
collected prior to the stop will be returned by extended attribute functions.
• Issue this function when the channel is idle.