This attribute is obsolete. Please refer to the Override component
for the new attribute.
This attribute specifies the number of VCCs supported for each VPI
in the Programmable VCC Space. The VCI values of these VCCs
range from 0 to (numVccsPerNonZeroVpi - 1) for each VPI in this
space.
The size of the Programmable VCC Space must be a power of 2.
The VCC Space as a whole must adhere to the guidelines laid down
in the description of the AtmConnMappingVccProv group.