COMNET III CACI

The voice mail traffic is given the ABR AAL3/4 parameter set with these values:
ABR AAL3/4
Basic Protocol Data Bytes 44
Overhead Bytes 9
Other
default
Rate Control
available rate
Burst Units Packets
Nrm 32
PCR 50
MCR 19
Limit 100
ICR 25
CIF 10
AIR 5
RDF 2
TOF 4
TDF 2
Xrm 16
XDF 2
Table 17: COMNET III parameters for the ABR AAL3/4 service class
With these settings, the alternative model represents a pure ATM protocol stack, where
the traffic is already segmented into ATM cells at the source. For this reason, the framing
characteristics on the point-to-point link in the model have been set to 0. The topology of
her second model is depicted in Figure 14.
51