Obtaining speeds on rate limited circuits over ATM PVC's (Cisco) via SNMP

Hiya,

I have the current setup whereby I have a DSL(ATM/PVC) interface of 2Mb which is limited to 256K, when I pull off the IF index, it correctly reports it as 2Mb. Is there a way to get the rate limited value from the ATM Interface ? I cant seen anything within Cisco's ATM Mibs which can pull this off..

Thanks in advance,

Al.