A bit string which indicates the configuration capabilities of
a node.
The 'Hold Available' bit indicates the support of the optional
Hold function, which is controlled by 'wfFddiSmtConfigPolicy'.
The 'CF-Wrap-AB' bit indicates that the station has the capability
of performing a wrab_ab.
The value is a sum. This value initially takes the value 0, then
for each of the configuration policies currently enforced on the
node, 2 raised to a power is added to the sum. The powers are
according to the following table:
Policy Power
------ -----
HoldAvailable 0
CF_Wrap-AB 1