We are aware of an issue affecting inbound and outbound call routing on our network that started at 15:55 and are investigating as a matter of urgency. Initial diagnostics and reports show this to be an upstream carrier issue.
UPDATE01 – 16:10 Due to the nature of the outage, Automatic outbound re-routing to an alternative carrier has been intermittent as the carrier suffering the issue has been going on and offline. We have therefore manually re-routed outbound calls and can see them terminating OK. We are continuing to investigate.
UPDATE02 – 16:15 Further investigations are showing our BGP session to the affected upstream carrier as being intermittent. While reviewing the link we have received notice from 1 of our fibre providers that they have suffered a fibre issue in the Docklands area and this is causing there network to re-converge. Outbound calls continue to terminate correctly, however inbound calls via this upstream provider may be intermittent.
UPDATE03 – 16:45 We have seen the link stabilise and inbound calls from the carrier terminating OK. We are continuing to route outbound calls over alternative carriers as a precaution.