[SR-Users] cdr processing questions

[voipspace voipspace]

A few question;

Firstly

With mod acc and acc_cdr i see the default fields logged is only start_time, end_time, duration.

This is an actual entry logged.

start_time, end_time, duration
1515353126, 1515353135, 9.660000

Why is the duration 9.660000? 

It seems wrong because it is more then the difference in time

1515353135 - 1515353126 = 9



Secondly

What is a reliable way to capture and log start time, answer time, and end time.
How do I get the duration info. a) start time to end time. b) answer to end time. 

Is there an built in variable that store this info?


Thirdly

dialog events listed as:

event_route[dialog:start]
event_route[dialog:end]
event_route[dialog:failed]

There does not seems to be a event for answer so then how to be notified when a dialog is answered?

Regards