getting events history with time interval

Hello!

First it needs to clarify what kind of events you would like to get.

The request avl_evts is used to get some updates after last reading only. It can be changing elements, settings, create new elements, changing access rights.
The history of such kind events can be get via Log messages - get messages with such type 
or execute report which content table Log

Or maybe you need other events - like trips, ignition state, sensors, speedings.

Please specify more.