As I wrote in an other SIP thread I still have issues after following Gert's "guide". I can make and receive calls but can't hear anything since the RTP ports is blocked på the firewall. According to Gert's the firewall should do some magic, but that's not the case for me.

Am I doing something wrong or is this setup only ment for SIP servers behind the firewall and not a VoIP adapter (i.e. Sipura 2100)?

Eirik