In my setup when Invite comes to freeswitch dialplan plays a sound file and then Bridge the call to destination. I am using csv CDR and trying to get timestamp when there is either 180 or 183 from end destination (After bridge). What variables should I use the correct progress timestamp.

I printed variables in two extensions ..

Extension 1 (where sound file is being played)
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Caller-Profile-Created-Time: [1422696316256090]
Caller-Channel-Created-Time: [1422696316256090]
Caller-Channel-Answered-Time: [0]
Caller-Channel-Progress-Time: [0]
Caller-Channel-Progress-Media-Time: [0]

Extension 2 (where call is being bridged transferred from Extension 1)
----------------------------------------------------------------------------------------------------
Caller-Profile-Created-Time: [1422696320776083]
Caller-Channel-Created-Time: [1422696316256090]
Caller-Channel-Answered-Time: [0]
Caller-Channel-Progress-Time: [0]
Caller-Channel-Progress-Media-Time: [1422696316256090]

From this log I think progress timestamp is the one generated when sound file plays but I need the progress time when 180/183 received after bridge.