There's really no way around it. We don't play the recording and our underlying carriers don't play the recording. If there is a failure or error, an error code is generated in the signaling and passed up stream until it gets to the caller's carrier. The interpret the code and play the appropriate response (for failure, this is busy).

Part of the issue is that if there is a failure due to an internet outage or something like that, the failure would be the same as any other failure so there is no way to differentiate. If CLECs try to interpret then they are not standard compliant which causes even more issues.

When there is a failure between VOIPo and our end user, we use our failover feature, but if the problem is from the phone network to VOIPo, there's not a lot that can be done to prevent it.