The Grandstream GXP2135 is a Wi-Fi enabled, high performance gigabit IP phone that is the answer to your enterprise level needs. It has up to 8 lines/line keys and 4 SIP accounts. With key features such as Power over the Ethernet (PoE), built-in Bluetooth, and dual Gigabit ports for fast and clear IP communications, why look anywhere else? The GXP2135 is the ideal IP Phone for busy workers. Easily sync your mobile device and/or headset with GXP2135's built-in Bluetooth and enjoy HD audio and a 2.8 inch LCD color display. The GXP2135 has 4-way conferencing capabilities and supports EHS compatible Plantronic's headsets.