I'm hoping someone call help with the actual UDP and/or TCP ports needed outbound and inbound in a firewall to allow my new 8120 to work over Wifi for making calls.

I use a Cisco PIX at home (I know, sounds strange, but it lets me have a full time VPN to the office to manage our network). The PIX by default is pretty stingy, but I do have it allowing all outbound ports. But the UMA does not allow me to make calls.

I turned off the Mobile Network and only allow the Wifi connection. I can browse the internet, but cannot make phone calls.

I'm sure some ports are being blocked that I need to open.

Any help would be appreciated. Thanks in advance.

Add this line to your Pix config to enable NAT-T:

isakmp nat-traversal [natkeepalive_in_sec_20default]

No good. I still get the W006.9 Error Code in the Wifi Diagnostics under the UMA section. Any other ideas would be appreciated.

I also tried opening ESP and UDP 500 and 4500 inbound any any and that does not help.

I was reading that only NAT will work (single inside to single outside). I have to use PAT as I only have 1 IP address via DHCP from my provider.