Originally Posted by eternallyme
They considered the concentrated overlay (343 only in Ottawa, use the remaining 613 numbers elsewhere) and rejected it, since growth in the outlying areas is enough that 343 would have to be expanded anyway within a few years.
Sounds like they could have done it if they'd started a few years ago. But at the end of the day they would still need to support both area codes in both geographies.
Another factor could be that they don't have many unused branch numbers (or whatever they call them). I think the way the land lines are set up, the 613-XXX-0000 to 613-XXX-9999 is supposed to be all in the same area. Now that they have number portability for cellphones that might not be the case for landlines either.
Meh. Not important enough to figure out.