The type of record being returned. This will always be 'call'
call_control_id stringrequired
Unique identifier and token for controlling the call
call_leg_id stringrequired
ID that is unique to the call and can be used to correlate webhook events
call_session_id stringrequired
ID that is unique to the call session and can be used to correlate webhook events. Call session is a group of related call legs that logically belong to the same phone call, e.g. an inbound and outbound leg of a transferred call.