Incoming and outgoing calls works fine, but if I try to call extension 105 from extension 101,
I only get: "error 503 Service Unavailable" in the log file.
The only way to make an Internal call is to set up an External Line with for example External line name: 123 and have it ring on 105.
No Gateway Server and no password. But I don't think that's the way it's supposed to work.
How can I solve this problem?