This object defines highest delay class for R97/98 QoS
can be accepted in a particular APN. This object is used only
for GTP v0 PDP, or GTP v1 PDP containing R97/98 QoS. If Delay
class is higher than highest number, the request will be either
downgraded to the configured number, or rejected. If this
object is not set, the request will be mapped to R99
Interactive or Background traffic class based on the rules
for determining R99 attributes from R97/98 attributes that is
defined in 23.107. The Highest Traffic Handling Priority will
be applied if the class is mapped Interactive traffic class.