3G LTE Questions and Answers

I got this question long back from one of 3glteinfo reader. Here is the specific question he asked: I have one doubt in VoLTE call flow like how we differentiate for MO VoLTE and MT VoLTE call? Means if we were given two MO/MT logs for VoLTE then how we can identify like which one is MO VoLTE or which (more ..)