A descriptor based system is used for scheduling {HEAD ~ the timely output} of transport packets wherein {TAIL ~ each descriptor} records a dispatch time as well as a receipt time for each transport packet 
A descriptor based system is used for scheduling { HEAD ~ the timely output } of transport packets wherein { TAIL ~ each descriptor } records a dispatch time as well as a receipt time for each transport packet
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH