This attribute specifies the initial Class of Service (CoS) given to each
packet received on the on the virtual circuit identified by the dlci. The
CoS value n is used to select Vr/<string> QosP/n. which determines the
QualityofService-Profile to be used when the packet is forwarded.
The intial CoS given to a packet by the assignedQoS attribute may be
overriden when the cosPolicyAssignment attribute is defined on the
IpPort or Ip components.
When a packet is to be transmitted on a frDte protocol port where
multiple virtual circuits are available for the packet's next hop, the
packet is forwarded using the dlci where the ipCos value matches the
CoS of the packet. When the packets's CoS does not match the ipCos
value of any of the available virtual circuits, the packet will be
forwarded using next lowest CoS; failing this, the packet will be
forwarded using the next highest CoS.