I’ve been using SIPStation for a couple months now with a lot of success. Lately some members (we are a fire house) have reported getting 3 rings then a fast busy when making calls.
I did some research and it says that would indicate that means it couldn’t find a path out. I’m thinking maybe it was an incoming call at the same time, but I have the option enabled to allow per minute overages on the trunk (we have 1 trunk)
Anything I could be missing?