11:30 - We have identified an issue with inbound calls failing to reach our network from Vodafone this morning. We have raised the issue with our inbound carriers and with Vodafone directly, and are currently awaiting an update.
12:20 - Vodafone have acknowledged the issue and are investigating.
13:20 - The issue now seems to be resolved. As far as we are able to ascertain the issue was caused by an incorrect data change relating to the BT-Vodafone interconnect.