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CEL event type Description
CHAN_END occurs after Asterisk has completed post-call cleanup and all resources associated with
that channel have been released.
APP_START A tracked application has started executing on a channel. Tracked applications are set in the main
CEL configuration file, which is covered in “cel.conf” on page 540.
APP_END A tracked application has stopped executing on a channel.
PARK_START A channel has been parked.
PARK_END A channel has left the parking lot.
BRIDGE_START A channel bridge has started. This event occurs when two channels are bridged together by an
application such as Dial() or Queue().
BRIDGE_END A channel bridge has ended.
BRIDGE_UPDATE An update to a bridge has occurred. This event will reflect if a channel’s name or other information
has changed during a bridge.
BLINDTRANSFER A channel has executed a blind transfer.
ATTENDEDTRANSFER A channel has executed an attended transfer.
USER_DEFINED A user-defined channel event has occurred. These events are generated by using the CELGenUser
Event() application.
There are some more events that have been defined, but are not yet used anywhere in
the Asterisk code. Presumably, some future version will generate these events in the
right place. They are listed in Table 24-8.
‡
Table 24-8. Defined but unused CEL event types
CEL event type Description
CONF_ENTER A channel has connected to a conference room.
CONF_EXIT A channel has left a conference room.
CONF_START A conference has started. This event occurs at the time the first channel enters a conference room.
CONF_END A conference has ended. This event occurs at the time the last channel leaves a conference room.
3WAY_START A three-way call has started.
3WAY_END A three-way call has ended.
TRANSFER A generic transfer has been executed.
HOOKFLASH A channel has reported a hookflash event.
‡ If you submit a patch to add any of these events to the code and reference this footnote, Russell will send you
a free Asterisk t-shirt. Footnote bribery!
538 | Chapter 24: System Monitoring and Logging