VoLTE Call mute during LTE inter frequency HO

Hi Experts,

I observed a volte call mute situation for 19 seconds and during that period paging happened. My UE had servings from L1800 B3 and after the paging happened it was from L850 B5. Anyone know the reason for it?

Ue may started rrc reestablishment, check the values reestablishment timers if they are not set aggressively. However 19 s is quite a lot and there should be other reasons as well. Poor radio link quality could be a RC.