hi guys....
I really need youe help in this matter, I have Epygi Quadro4x PBX Firmware Version: 5.0.17
and I have polycom 330 how can I connect this phone to epygi.
I tried to add extension with this phone but I could not connect it to the PBX, even though I have AAstra phone and I have connected all of them>

pls reply me as soon as possible
waiting for your reply...