I have a 3CX PBX setup with sip trunk which works, but sometimes callers state they can't get through (various errors). When I try the line myself, it seems to be fine. Callers are dialling the right number, because they do get through.
I'd like to try to do some automated testing - most likely dialling the number and hanging up immediately when the ring is detected, and recording the results
Is there any sort of software that can do that, or can be configured or scripted to do this? I'm not averse to a bit of API coding or setup, or some other cost re getting another VoIP connection.