We have been advised that the un-planned outage on Friday the 17/05/2013 between 14:00 – 15:00 lasting approximately 5 minutes was caused by a power loss on BTs transmission network.
Report from 02 Wholesale:
We had a problem with a link between GS2 and one of our switch sites which took out some sessions going through that site. The sessions were immediately re-established on another link, but you would have seen a drop and then re-establishment. It was caused by a power outage on BT’s transmission. The link is being closely monitored and we haven’t seen any further problems.