Enumeration members
ACCEPT_FAILED
ACCEPT_FAILED: = "accept_failed"
CANCELED
CANCELED: = "canceled"
COMPLETED
COMPLETED: = "completed"
CONNECTION_LOST
CONNECTION_LOST: = "connection_lost"
DECLINED
DECLINED: = "declined"
DIAL_FAILED
DIAL_FAILED: = "dial_failed"
NO_ANSWER
NO_ANSWER: = "no_answer"
OTHER_DEVICE_ACCEPTED
OTHER_DEVICE_ACCEPTED: = "other_device_accepted"
TIMED_OUT
TIMED_OUT: = "timed_out"
UNKNOWN
UNKNOWN: = "unknown"