The SIP phone GRANDSTREAM GXP-2140
Supports 4 lines, 4 SIP accounts and 5-way voice conferencing
HD audio on speakerphone and handset
5 programmable context-sensitive soft keys
Compatible with GXP2200 LCD extension module (GXP2200 EXT)
4.3 inch (480×272) color-screen LCD
Dual Gigabit ports, integrated PoE
Integrated Bluetooth for use with Bluetooth headsets and Bluetooth-enabled mobile devices (transferring contact books and calls)
USB