[Serusers] MeadiaProxy + SER + X-lite in the same Lan.

Hi to all, I'm newbie using SER and need your help. This is my testbed: SER running on 192.168.123.186 MediaProxy running on 192.168.123.186 Client_A X-lite running under WinowsXP on 192.168.123.168 Client_B X-lite running under WinowsXP on 192.168.123.10 I want to route RTP packets between 2 computers in the same network through Mediaproxy. I know this may have no sense, but it's just a test configuration. The call use_media_proxy() seems to have no effect, the RTP packets go directly from one computer to another. My guess is mediaproxy makes a test on the IPs (they are 192.168.147.2 and 192.168.147.3) and refuses to proxy the call. Is mediaproxy working just between different networks or it's an error in my configuration file? But if i use this Enviroment: SER running on 192.168.123.186 MediaProxy running on 192.168.123.186 Client_A X-lite running under Linux Fedora on 192.168.123.168 Client_B X-lite running under WinowsXP on 192.168.123.10 The call use_media_proxy() correctly and the RTP packets pass through the mediaproxy, infacty using tools session.py I see the session active and traffic packet amount. Why, with client under Windows, Media proxy doesn't work correctly? Any suggestions, please? Thanks in advance. Orazio