You can take advantage of oversubscription of bulk-configured ATM VCs. The router supports oversubscription of bulk-configured VC ranges when you create a bulk-configured VC range on a static ATM AAL5 interface for use by a dynamic ATM 1483 subinterface.
Oversubscription of bulk-configured VC ranges works in a similar, but not identical, manner to oversubscription of static ATM 1483 subinterfaces that support dynamic upper-layer encapsulation types. For more information, see ATM Oversubscription for Dynamic Interfaces in Configuring Dynamic Interfaces.