Connect two routers

[bigbuck]

I have two routers with T1 dsu/csu interfaces.I have them cabled and am getting a carrier detect green led light on both.My question is how do you configure a T1 dsu/csu interface on these routers to get them to talk ?
Any thoughts ?
Mike

[NicoSantiago]

              Can you share the photo of this routers?


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