scorpion,
Check the router IP address. Some sites that I goto reports a 220.xx.xx.xx address where my local ISP should be 165.xx.xx.xx. The accurate reports came from dynamicDNS . COM. Again, look through that site to see the Port checker tool, it will confirm if the port is opened or not.
I just finished a NDVR installation with 2Wire's 2701HGV-E (and I have one at home too) so post back here with your findings and I'll see what I can do to help.
Cheers !