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dateTimeOrigination

For outgoing calls, this field designates the time the device goes off hook.
For incoming calls, this field designa tes the time the SETUP message is
received.

dateTimeConnect

This field designates the time the devices connect and speech begins.
This field shows a zero if the call never connects.

dateTimeDisconnect

This field designates the time the call disconnects. This field shows a zero
if the call never connects.