T33G VoIP SIP telephone, 2 x Gigabit Ethernet, 4 x line keys, PoE required, AC optional, 2.4 inch colour backlit LCD, HD audio, RJ9 headset jack, EHS support for specific Jabra and specific Plantronics headsets (cable required, SKU #EHS35), adjustable stand (two positions, can also be used as a wall mount bracket), supports YDMP / YMCS. Optional AC power supply, SKU # PS5V600US.