[Serusers] NatHelper & Mediaproxy question.

Hello list. I have reached a point where i need some advices and a little help. I'm using mediaproxy to solve the NAT'd client "problems" this module works fine, and solves all the scenarios that i'm interested but for i noticed i alway have to enable the mediaproxy, even for the calls between two clients with public.ip, this is a problem for me, i would expected that the media in this case goes directly between the endpoints. Mi first question is : Is this behaivor normal? Is that the way the mediaproxy works? Second Question. If i use nathelper, would i have the same problem?. Among the nathelper users do you have any similar experience. Does anyone knows if Nathelper solve this issue?. I really, really hope that someone can help me with these questions. Thanks in advance. Best Regards Ricardo