We are investigating a problem with some incoming calls, our engineers are busy investigating this now. Apologise for the inconvenience.
We have raised this with the carrier in question, they are investigating.
The carrier have confirmed that they have a fault.
Customers can call us on: Sales: 05555 400 000 Support 05555 400 999 for the time being.
Carrier say "Our engineers are working on this as a top priority"
Carrier says: "initial investigations point to memory issues and we are investigating that further. As a temporary solution we are attempting to update our internal routing to mitigate the impacts."
Incoming calls seem to be working ok now.
Calls working again. Fault was caused by upstream carrier and affected may VoIP services across the UK. The carrier has provided a 'Reason for Outage' document: http://www.aql.com/downloads/RFO_20150323_aql.pdf