Yeah the Cisco ME 3400E is their hand-off to copper in the building. It's also more than a switch, Optimum has remote access to the ME 3400E and can provision and monitor the site from that appliance. Right now we have the UPS hooked up to one of the alarm interfaces but it could do much more such as a door alarm, etc.
Yes we're hooking up our router to the ME 3400E. Model has yet to be decided.