[Serusers] General Question on BYE

Hi, I have see recent discussions on this topic among developers but I am trying to ask a general question without getting into ser.cfg and 0.9x vs 2.x comparisons. My Question: What are the practical reasons why SER 2.0 would simply ignore "BYE" messages sent to it from a gateway when the user terminates a call? user => gateway => ser => gateway Good connection and conversation. When the user hangs up Gateway sends BYE message. SER does not reply or forward to destination gateway. SER never even sees it. I see the BYE message on tshark but it does not appear in ser.cfg with xlog() statements right at the top or route{}. Anyone with an opinion or suggestion to offer? ..mike..