[Periodic]

The reason cited seems much more a case of moving call-management into a high-level software system that didn't have the same sort of rigor that telecom systems traditionally have. Maybe it did and someone missed this? It's hard to know. In short it feels a lot more like a management failure than a failure of software.

[walshemj]

Probably a lowest cost bidder and not helped by the US devolved government if this had happened in say the UK the papers would have a field day and the government would force the telcos to fix it stat!