This attribute is obsolete. Please refer to the Override component
for the new attribute.
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 atmNumberOfNonZeroVpisForVccs_m must also
be 0.
The VCC Space as a whole must adhere to the guidelines laid down
in the description of the AtmConnMappingVccProv group.