Over the weekend our primary VoIP partner shifted IP addresses but apparently had trouble moving their DNS as well. So, for a few hours this morning we were pointing at a proxy that had 0 channels available. We have sorted out the issue with the provider and all channels are now ringing properly. Unfortunately, there is no such thing as redundancy on the toll free number, it points to a single DID which resolves to a single provider which is very redundant but does not support ring-down to the failover provider. So while we could make calls out and all direct calls made it in, outbound calls failed.
For what it’s worth, we realize that this is getting ridiculous. Unfortunately, this one is out of our control.