# Call status and protocol capability status events

Event | Informational/ Transitional | Solicited/ Unsolicited | Indicates that...
--- | --- | --- | ---
NCCEVN_CALL_STATUS_UPDATE | Informational | Unsolicited | A call status changed.
NCCEVN_CAPABILITY_UPDATE | Informational | Unsolicited | Protocol capabilities changed.
NCCEVN_EXTENDED_CALL_STATUS_UPDATE | Informational | Unsolicited | Extended call status information changed.