Cabinets can be enabled once all the infrastructure that serves that cabinet is installed.
The March/June/September/December dates are just placeholder dates, if the exchage is not accepting orders by the date it will change to the next three month date, but could be enabled anytime, or slip again.
Also, just because the cabinets are in, does not mean the fibres been blown to them, or the power is connected etc.
The three exchanges in our area originally had a March date which moved to 30 June. Two exchanges went live a week or two back with 5 cabs on each exchange going live, as the weeks have gone by some more cabs have been enabled.
Edited by R0NSKI (Fri 22-Jun-12 08:14:29)