I have a 2620 here with WIC-1DSU-T1 and WIC-1ADSL connected to the same ISP. T1 and DSL interfaces are on the same WAN e.g. public IPs X.Y.Z.10 (T1) and X.Y.Z.20 (DSL). Gateway is X.Y.Z.1 for both (T1&DSL), net is /24. What is the proper config for t...