Username
Main user of the SIP user that started the call.
Sip user
SIP user that requested the call.
Credit
User credit.
Number
Dialed number.
Codec
Codec used.
CallerID
The CallerID number.
Trunk
Trunk that was used to complete the call.
Reinvite
Reinvite indicates whether the audio is passing through Asterisk or directly between the client and the trunk. You can see more details at the link https://wiki.magnusbilling.org/en/source/asterisk_options/directmedia.html..
From IP
IP of the caller.
Description
Data from the sip show channel command.