Oh, I have already done that long ago, yes I am behind NAT and specified my IP. The system is fully functional with IConnecthere.com however, there is actually more latency and worse audio than I get from my Internetphonewizzard box that I bought on Ebay for $10!
I am also trying to get the ATA to receive calls from Netmeeting but not having much luck, trying this on my local lan from PC to ATA so firewall is not an issue. Neetmeeting keeps saying “The other party cannot accept Netmeeting calls”. I can get it to connect using another software that is sip compliant. But would like to take the ATA out of SIP mode and make it feasable for outside connects from my website netmeeting applet so the end user does not need to download any special software.