dce

I had been doing it on cisco packet tracer. I am using a 2811 router and used NM-2E2W as an extra port in the router providing two WIC slots. But at the time of connection of serial DCE link there is no connection path showing.

Hey guys..After advice abt org. chem notes..I want to know something more.. I want recommendations 4 all subjects (maths,chem,phy) 4 dce..I want very less material with maximum knowledge possible (so that i can make it thru dce)..I Know many IITians and dce students and othr engnr. students...r...