The GXP2140 is an advanced business class IP phone with up to 4 lines, 4.3" color TFT LCD, 5 programmable context-sensitive XML keys, dual Gigabit network port, integrated PoE and Bluetooth, 5-way voice conferencing and Electronic Hook Switch (EHS). Delivers superior audio quality in the headset and speaker, valuable and next-generation telephone resources, personalized information and customizable application service, automatic provisioning for easy installation, advanced security protection for greater privacy and broad interoperability with most devices Third party SIP and the main SIP / NGN / IMS platforms.