3CX compatible handsets and guides to configuration:
Snom 300, 320, 360, 370, 710, 715, 720, 760
Yealink T19P, T20P, T22P, T26P, T28P, T23P, T27P, T29P, T32G, T38G, T40P, T41P, T42P, T46G, T48G, W52P
Polycom Conf. 5000, 6000, 7000
Legacy – Limited Features:
