A conference room has the field "Numbers to call when entering the conference:" set to local extensions: 110,111,... (softphones on laptop)
When a first participant joins the conférence, the pbx calls the local extension except when the local extension is not registered
Each extension have a "number to transfer if extension not registered" set to an external number
Why pbx does'nt call this external number for the conference if the extension not registered ?
it would make sense that users can follow a conférence even if they are not at the office with GSM number or fallback number