This has remained stable for an hour now but we are yet to receive the all clear from the third party network. We shall continue to monitor until we are happy this issue is resolved.
We are still seeing some calls being forced to the affected site by customers, despite our actions to re-route traffic away to the best of our ability by changing DNS. This will be due to misconfigured equipment using IP addresses directly or perhaps very long DNS caches.
Whilst this is beyond our control, we would again ask customers to follow our interop (viewable https://support.simwood.com/hc/en-us/articles/115008835528-Outbound-SIP
) as fully as possible in order to minimise any disruption.
We're also aware that some customers may have experienced intermittent issues reaching anycasted services such as the portal or API where requests hit the London Volta site, these nodes were withdrawn from service during the period of peak instability but have now been restored.
Until we receive confirmation from the third party network that this incident is resolved, we will continue to leave voice traffic routed away from London as far as possible.