The system 4, wherein said QoS event includes at least a subset of link utilization rate, a queue length, or a packet loss rate exceeding a predetermined maximum threshold or falling below {HEAD ~ a predetermined minimum threshold} for {TAIL ~ at least a predefined time period} 
for
The system 4 , wherein said QoS event includes at least a subset of link utilization rate , a queue length , or a packet loss rate exceeding a predetermined maximum threshold or falling below { HEAD ~ a predetermined minimum threshold } for { TAIL ~ at least a predefined time period }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL