I'm trying to access the outcome of calls.

However the only voipcall status set is: status: completed and hangup_reason: hangup_script_end.

Debugging with the Twilio handler watching voiptwilio_update_call_status() I notice it's only ever called with $twilio_call_status as 'completed' (even if the call is not answered, is rejected, or the number is busy).

Twilio issue, or?