The object indicates the event that occurred.
other - An event other than the ones listed below.
register - A full RRQ was received by the gatekeeper to
register a previously unregistered endpoint.
unregister - An endpoint was unregistered because it sent
a URQ to the gatekeeper.
unregisterForced - The gatekeeper sent a URQ to the endpoint.
overload - The gatekeeper has detected sustained
overload. A sustained overload condition
will cause the gatekeeper to reject calls.