I have a 7206VXR with a Multichanel T-1 port adapter, PA-MC-2T1. Can I use this for my T-1's to my upstream bandwidth providers? It has built in CSU/DSU so I'm thinking I can. Also when I boot up the router I cannot see the interfaces, the ports show up during boot but a sh int does not see it. This port adapter has never been configured on this router.Running Version 12.0(10)S currently, router is not online yet.