Help with Asterisk: Logging attended transfers

[Flora_Yealink]

Hello,
So your mean the phone behaves correct while the log in the Asterisk is incorrect ?
For Attended transfer call:
If A calls B, B answers the call , A and B are in the call , A tells B that A want to find C
B presses Transfer +C's number to make a call to C, C answers the Call, B then presses the Tranfer button to finish the transfer, now B back to idle states, and A and C are in the call.

in this case, you can refer to the sip follow for Yealink phones,hope it can help.
http://www.yealink.com/Upload/UCOne/2014...V73_40.pdf
Call Transfer with Consulation in the page 56

Best Regards!