I recently helped install a FreePBX system for a friend’s business. I have one in use at my business and have not had any issues. Just this week they let me know that for 2 days straight (Monday and Tuesday mornings) it seems they had an outage where inbound and outbound calls could not be made during a period of possibly 30-60 minutes. Then the issue self corrected. Any thoughts on what could cause this? It seems the phone users trying to make inbound and outbound calls get a pre-recorded error message during this time. I have been unable to confirm exactly what the message says. I think when they were trying to call out they got an “All circuits are busy” message. And I think the inbound calls got a “The number you have dialed is not in service” message.
We contacted the SIP trunk provider and confirmed the outage was not on their end.