I will appreciate your input regarding the ATM framing for T-3 for different cisco routers. For e.g. if i have a Customer Edge router can i set the ATM-Framing for c-bit manually or it just allows you to have an "auto" settings. Also which router's ( 2600,7200,4500's,...)we can manually set the "c-bit" manually under ATM where T-3 is connected.
Any help will be appreciated.