Hi Julio,
If you are talking about FRF.16 it will depend on your topology. You won't be able to configure FRF.16 directly on the ATM side, but you can have MFR converted by FRF8 and then sent to the ATM side so that you will have end to end connectivity. For example if your topology was like this:
[R1]----(ATM|FR)----[R2]
There will be a device (usually provided by your carrier) performing the IWF (internetworking function) so on the frame side you can have MFR and you'd only be doing MFR between R2 and the carrier switch. They will pass the traffic through to the point where FRF.8 is performed and then CELLS are sent out the ATM switch towards R1.
[R1]----(ATM|FR)----[R2]
|--ATM--| FRF8 |-FRF16-|
You can also do FRF.8 in a similar fashion on routers. I have a good example in this doc.
http://www.cisco.com/en/US/tech/tk39/tk53/technologies_configuration_example09186a00801747e3.shtml
Hope this helps.
-Tim
