tAtmTdpPir identifies the peak information rate
in kilobits per second.
The default Pir is determined by the Service Category.
The following default applies to Pir that is modifiable
depending upon a given service category:
Applicable Service Category Default Pir Value
UBR (with/without Mir) 4294967295
CBR 0
RT-VBR 0
NRT-VBR 0