This attribute is a vector that specifies the optimization metric for
each ATM service category. The optimization metric is used during
Generic Connection Admission Control (GCAC) route
computation.
Setting the value to cdv for a particular service category will cause
GCAC to optimize for cell delay variation on call setups requiring
that service category.
Setting the value to maxCtd for a particular service category will
cause GCAC to optimize for maximum cell transfer delay on call
setups requiring that service category.
Setting the value to aw for a particular service category will cause
GCAC to optimize for administrative weight on call setups
requiring that service category.