Transfer to Remote Phonebook

[Minerva]

We have several types of Yealink phones. Transferring calls to remote phonebook is easy and works fine on T48G as you see a remote phone book option after the transfer button is pressed, however, it doesn't work that way on other Yealink phones. Tested this on T21P and T41P phones, but there you can only transfer calls to Local directory. Is there any way to fix this problem?