I recently bought a FR switch on eBay however when I connect it with another router's WIC-1T interface both ports show "down/down"... I tried different clock rates, sync/async modes and different encapsulations but no help. The cable I use is normal DCE-DTE cable. The cable works fine when I connect two WIC-1T cards together. The FR switch does show me 8 Serial interfaces in show run... Any ideas? Thanks!