Region : Argentina

Model : TL-R470T+

Hardware Version : V4

Firmware Version :

ISP :

Good Day,

I am trying to connect two WAN connections, one that comes out of my T1 router and one out of my Comcast broadband modem. The issue is the T1 connection operates in a static IP environment which connects to my firewall which then connects to my local LAN which is also all static IP's while the Comcast connection is all dynamic. What I would like to accomplish is to take the T1 connection and the Comcast connection and feed them both into the static IP environment running through the firewall. I tried setting up the TP-Link with a static IP for the T1 connection but had no idea what to use for the LAN side. The firewall has a default gateway setting which is the static IP of the T1 router. Sorry if this is a bit convoluted-I am a novice at detailed networking. Any help would be greatly appreciated.