Hi! We got a 3CX Phone System, with all the latest Updates (free edition) Problem is: The Phone System is running smoothly for 2 weeks or more, and once of a sudden when u try to call a number (the only one which is registered, its a branch office), it wont route to the correct DID. All i can see is, that the call is accepted, i can see the "evt::CheckIfAuthIsRequired::not_handled" with the correct numbers in server status. But i dont get the "LineCfg::getInboundTarget", which comes normally right after the first message when it is working. A restart of the server or services doesnt solve the problem. The only thing that helps: When we change the "Internal Number (Use different range as extension range)" from 0001 to 0002 or any other number (found in "other options" of the Providers Line configuration) and press ok, it works again immediately. Any ideas why the Phone System behaves like that?