At present I have polycom gsx 6000 VCU and they break out via ISDN. I am now being asked to set up videoconference over the internet. This is where the issues begin I think. The firewall I maintain does not have a direct link to the internet. I NAT my internal address to a third party and then they NAT that address out to the internet. What issues am I likely to experience as the documents that I have read indicate that IP video and voice are not NAT friendly and can cause problems being NAT'd once never mind twice.
Is there any good documentation that someone can point me to?