[Freeswitch-users] Wait for ANSWER/HANGUP events in Mod lua

[Sami Montour]

I am using Mod lua for call processing on the FreeSwitch. I would like to
wait for some events such as CHANNEL_ANSWER and CHANNEL_HANGUP  in order to
get the answer time and hangup time. Basically, something like

 

Wait for event CHANNEL_ANSWER or CHANNEL_HANGUP

If (event_name = "CHANNEL_ANSWER") then answer_timestamp =
getHeader("Caller-Channel-Answered-Time") 

If (event_name = "CHANNEL_HANGUP") then hangup_timestamp =
getHeader("Event-Date-Timestamp")

 

The session:getState() described in module lua gets the call state but not
the channel state. For instance, 'CS_EXECUTE' is the channel state when it
is executing a dialplan not when the call is answered. 

 

Is there a way to wait for channel events such as CHANNEL_ANSWER and
CHANNEL_HANGUP in order to retrieve answer and hangup timestamps for a call?

 

Any input is very much appreciated.

 

Thanks.

 

Sam

 

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