6867i VoIP SIP telephone, 2 x Gigabit Ethernet, 2 x line keys, PoE required, AC optional, 3.5 inch colour backlit LCD, HD audio, EHS support for specific Jabra and Plantronics headsets (EHS cable required) (expansion module port independent, no longer uses EHS/AUX port), USB 2.0 port, magnetic keyboard port, support for up to 3 x expansion modules