Attended transfer doesn't work with GS-BT200

[adams]

Hello,
I'm testing 3cx and all seems to work correctly. I have 5 BT200 Grandstream, 2 SPA 3102 and one voip provider configured.

Unfortunately when I try to transfer a call, the call are always blind transfered: when the user on the remopte extension pickup the phone he get the call "directly"....

How can I solve this Issue?

Thank you

 

[Philco]

Hi Adams, does this ocour if you put the call on hold first?

Phil