I finally installed a splitter on the incoming cable. Ran one leg to the Arris modem and the other to my old Motorola. Ran ethernet cable from my computer to the Motorola and use the Arris for router and phone line. Everything works fine except I cannot access the bank from anything going through the router of the Arris. I could hook up my old router for that too and just have the phone on the Arris, but this is good enough for now.
