The Average Bit Rate of the sender's data
stream. Within a transmission burst, the ar-
rival rate may be as fast as hwRsvpTeResvTSpec-
PeakRate (if supported by the service model);
however, averaged across two or more burst in-
tervals, the rate should not exceed
hwRsvpTeResvTSpecRate.
Note that this is a prediction, often based on
the general capability of a type of codec or
particular encoding; the measured average rate
may be significantly lower.