Full Duplex Full Duplex SherWat (TechnicalUser) (OP) 7 Dec 16 12:21 On a Norstar 3X8, are the 7310 sets full duplex or half duplex? What about the 7324? Is there a phone compatible with the 3X8 that is full duplex? Thanks. RE: Full Duplex MooreTel (Programmer) 7 Dec 16 13:08 All are 1/2 duplex. If you need full duplex for a conference phone, get a Polycom Soundstation RE: Full Duplex SherWat (TechnicalUser) (OP) 7 Dec 16 14:33 Thanks.