My PBX had previously been working just fine with no issues.
I rarely use it, though.
I decided to randomly call my number one day and received a message “The number you have dialed is not a working number”
I use SIP through Flowroute. My server is showing registration on Flowroute, however I am seeing multiple lines there where in the past, I only saw one.
I think you should call FlowRoute first and see what they tell you. I’d bet they want something in your account updated - a Credit Card number would be my first guess. If that isn’t it, whey will be able to tell you why the calls to your number are failing.
They tried to register a phone and there was no place to register. You don’t have an extension 260 (or any of the other examples). If it’s happening with phones you are expecting to work, you are connecting the phone to the wrong SIP port (5060 and 5160, for example). To clarify - if you set up a Chan-SIP extension and then try to connect the phone through 5060 (which could be PJ-SIP, depending on your configuration). Note that this is all based on your setup, so the actual numbers and ports may vary.