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Voice API for Windows Operating Systems Library Reference — November 2003 273
initialize and activate call progress analysis — dx_initcallp( )
!
!!
! Cautions
When you issue this function, the channel must be idle.
!
!!
! Errors
For a list of error codes, see the Error Codes chapter.
!
!!
! Example
#include <stdio.h>
#include <srllib.h>
#include <dxxxlib.h>
#include <windows.h>
main()
{
DX_CAP cap_s;
int ddd, car;
char *chnam, *dialstrg;
chnam = "dxxxB1C1";
dialstrg = "L1234";
/*
* Open channel
*/
if ((ddd = dx_open( chnam, NULL )) == -1 ) {
/* handle error */
}
/*
* Delete any previous tones
*/
if ( dx_deltones(ddd) < 0 ) {
/* handle error */
}
/*
* Change Enhanced call progress default local dial tone
*/
if (dx_chgfreq( TID_DIAL_LCL, 425, 150, 0, 0 ) < 0) {
/* handle error */
}
/*
* Change Enhanced call progress default busy cadence
*/
if (dx_chgdur( TID_BUSY1, 550, 400, 550, 400 ) < 0) {
/* handle error */
}
if (dx_chgrepcnt( TID_BUSY1, 4 ) < 0) {
/* handle error */
}
/*
* Now enable Enhanced call progress with above changed settings.
*/
if (
dx_initcallp( ddd )
) {
/* handle error */
}