This is actually a "how do I configure my router to do that?" Has anyone ever been given a DS-3 CESM circuit (i.e. you order a DS-3, and get some circuit-emultated thing running over a ATM on a higher order SONET circuit - no I don't know why) and actually got it to work? I appear to have (down/down) LOF one end and (up/down) the other. Are there restrictions on scrambling, framing, dsu-mode etc. that apply here in some way there wouldn't be had I been delivered the point to point DS-3 I originally ordered? Replies off-list most appreciated. -- Alex Bligh GX Networks (formerly Xara Networks)