No, the fibre can all go through 1 exchange in the area which has WBC.
For eg my exchange NILDW hasn't got 21CN WBC yet... the fibre all goes via another exchange nearby NILDM which has.
My exchange is due to have 21CN WBC by 31st March though...
Edited by BuckleZ (Tue 13-Mar-12 15:00:11)