For Apc-based cards, the maximum value of this attribute is 16384,
and the default value is 1024. The allowed values are either 1 or
powers of 2. For CQC-based cards the following constraints apply:
The maximum value is 16128, and the default is 768. This attribute
specifies the number of VCCs supported for the VPI Zero VCC
Space. The VCI values of these VCCs range from 0 to
(numVccsForVpiZero - 1).
The size of the VPI Zero VCC Space must either be 0 or a multiple
of 256. A value of 0 implies that no programmable VCCs can be
used. In this case numNonZeroVpisForVccs must also
be 0.
The values of all attributes provisioned in this group must adhere to
the guidelines laid down in the description of the Provisioned
group.