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78 Voice API for Windows Operating Systems Library Reference — November 2003
ATDX_DTNFAIL( ) — return character for dial tone
ATDX_DTNFAIL( )
return character for dial tone
!
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! Description
The ATDX_DTNFAIL( ) function returns the dial tone character that indicates which dial tone
call progress analysis failed to detect.
Possible return values are the following:
L
Local dial tone
I
International dial tone
X
Special (“extra”) dial tone
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! Cautions
None.
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! Errors
This function fails and returns AT_FAILURE if an invalid device handle is specified.
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! Example
#include <stdio.h>
#include <srllib.h>
#include <dxxxlib.h>
Name: long ATDX_DTNFAIL(chdev)
Inputs: int chdev
• valid channel device handle
Returns: code for the dial tone that failed to appear
AT_FAILURE if error
Includes: srllib.h
dxxxlib.h
Category: Extended Attribute
Mode: synchronous
Platform: Springware
Parameter Description
chdev specifies the valid channel device handle obtained when the channel was opened
using dx_open( )