[asterisk-dev] Problems with Firewall

[Karsten Asche]

Hi @ all,

IŽm programming a Softphone under Windows.
At the moment I have the problem if I do a call,
the SIP Session will be created succesfully but sometimes 
the speech from my XP System will be send but after send to server 
it will be blocked.
The curiosity is that under Vista this problem doesnŽt happen.
Both Clients run through the same Firewall.
If i Do the call on my XP with SJPhone it works fantastic and after 
compare the sent pakets with my sent pakets there are no differences.

What could it be?

Regards
Karsten