3G Drop Call: Re-establishment Failure Event in TEMS Discovery

Hi Experts.

What is the main cause of Drop Call (3G)?

I have a drop call event (TEMS Tool) with Drop type Re-establishment failure but the Call didn’t drop from handset/UE end.

Any one with tems Discovery Expert to check any specific Event for analysis.

Usually happened because of HO Fail, Poor Coverage and Congestion.