I have FreePBX setup and running with one NIC and IP using a SIP provider on the internet. Been running fine for a couple of months now. One has a public IP used for device registration and admin GUI. The other NIC needs to be on the XO SIP network. How can I setup and configure the second NIC to route SIP traffic to XO? Also, I would greatly appreciate any input from someone who has experience setting SIP registration with XO and FreePBX. We have a vendor provided Asterisk based PBX that is currently setup and running that way but we need to move away from them. Thanks in advance!