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<DIV><FONT size=2>Hi all..</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>My test environment is:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>SER use publice IP address at 163.25.xxx.xxx</FONT></DIV>
<DIV><FONT size=2>User A and B use private IP address at 192.168.1.xxx and
192.168.1.xxx( Publice IP is 220.135.xxx.xxx)</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>While A call B, I check the content of SDP that A
send to B have rewrite from "IPv4 192.168.1.xxx" to "IPv4
220.135.xxx.xxx"</FONT></DIV>
<DIV><FONT size=2>However, the session still cannot create successful.( I
use Windows Messenger to be User Agent)</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Please give me some advices, thanks!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Caxton</FONT></DIV></BODY></HTML>