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Agree with last post, you have an integrated T1 WIC.You'll see it if you issue a show interface The service-module commands will only show in the config if you change defaults (ie - b8zs/esf/timeslots 1-24).And yes, it uses an RJ45 connection.
It's been a while, but I had converted a site to something similar. The trick is to configure the core routers to be promiscuous - you don't hard code the peers on the core routers.You then configure a primary peer and a backup peer on the remotes.I...
