thanks a lot for this link.

but how to decide whether to go for cbr,ubr,abr.

will the same card work as t3 and e3 ???

Hi, the service parameters, that include VCI/VPI numbers, traffic category, etc. are communicated to you by the service provider.

The card works only when connected to an ATM device like a switch or an equivalent card. It doesn't work for non-ATM applications.

Hope this helps, please rate post if it does!