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Voice API for Windows Operating Systems Library Reference — November 2003 101
return duration of longer silence detected — ATDX_LONGLOW( )
ATDX_LONGLOW( )
return duration of longer silence detected
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!!
! Description
The ATDX_LONGLOW( ) function returns duration of longer silence duration in 10 msec units
for the initial signal that occurred during call progress analysis on the channel chdev. This function
can be used in conjunction with ATDX_SIZEHI( ) and ATDX_SHORTLOW( ) to determine the
elements of an established cadence.
See the Voice API Programming Guide for more information on call progress analysis and cadence
detection.
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! Cautions
None.
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! Errors
This function will fail and return AT_FAILURE if an invalid channel device handle is specified in
chdev.
!
!!
! Example
/* Call progress analysis with user-specified parameters */
#include <stdio.h>
#include <srllib.h>
#include <dxxxlib.h>
main()
{
int cares, chdev;
DX_CAP capp;
.
Name: long ATDX_LONGLOW(chdev)
Inputs: int chdev
• valid channel device handle
Returns: duration of longer silence if successful
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( )