The 3CX system is still under test, so it isn't being used for inbound calls. Outbound is unaffected by this issue, so I need to do an inbound call to notice this issue. Last Monday, inbound calls were not coming in. I did an inbound call and got a message stating that the number does not exist. After not seeing anything wrong with the inbound rule (remember that I am a newbie), I rebooted the system. that didn't work, so I called the SIP provider to find the 3CX was sending back a specific denial. I restored back to the previous Thursday and life was good. I restored back to the Sunday night backup, and still good. All week, everything was OK. Yesterday, I was busy and did not test the lines. A few minutes ago, I dialed in to show off a tablet running the 3CX and client, and the issue had returned. I restored to last night's backup, and life is good again. I am not sure what is happening, here. I am hoping that I just missed something. Any ideas are welcome!