Intel 05-1832-002 User Manual

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return the duration of the answer

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! Description

The ATDX_ANSRSIZ( ) function returns the duration of the answer that occurs when 

 

with Basic call progress analysis enabled is called on a channel. An answer is considered the period 
of non-silence that begins after cadence is broken and a connection is made. This measurement is 
taken before a connect event is returned. The duration of the answer can be used to determine if the 
call was answered by a person or an answering machine. This feature is based on the assumption 
that an answering machine typically answers a call with a longer greeting than a live person does.

See the Voice API Programming Guide for information about call progress analysis. Also see this 
guide for information about how cadence detection parameters affect a connect and are used to 
distinguish between a live voice and a voice recorded on an answering machine.

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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.

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! Example

/* Call Progress Analysis with user-specified parameters */

#include <stdio.h>

#include <srllib.h>

#include <dxxxlib.h>

long ATDX_ANSRSIZ(chdev)

int chdev

valid channel device handle

answer duration in 10 msec units if successful
AT_FAILURE if error

srllib.h
dxxxlib.h

Extended Attribute

synchronous

Springware 

chdev 

specifies the valid channel device handle obtained when the channel was opened 
using dx_open( )