I'm looking for something that can take a DS3 or OC3 and "turn" it into FE. Basically similiar to what http://www.ds3switch.com/ does.
Anda makes some boxes that do this.
I've had experiences with these (as a user, not an operator), and they
seem to work fine.
I just saw this in today's VON FOCUS on Hardware newsletter:
"RAD INTRODUCES MINIATURE ETHERNET OVER T1/T3 BRIDGE AT OFC/NFOEC"
but the link doesn't reveal anything.