The GXP2140 supports 4 lines, Gigabit ports to guarantee the fastest possible connection speeds, 5 XML programmable soft keys for customization and 5-way voice conferencing to keep business users in-touch. By being compatible with Grandstream’s GXP2200EXT extension module, the GXP2140 can offer users up to 160 speed-dial/BLF keys by combining up to 4 GXP2200EXTs to easily monitor presence and status of other extensions and transfer calls. HD audio and a 4.3" color LCD screen create high quality calls and built-in Bluetooth support allows for use of Bluetooth headsets and transferring of phonebook and calls from paired mobile devices. This High-End IP phone also features Electronic Hook Switch support for Plantronics headsets and a built-in USB port. The GXP2140 is perfect for Enterprise & SMB customers with the need for quality and versatility in their desktop communications.