GXP2170 
Powerful enterprise-grade IP phone ideal for busy users with 6 SIP accounts, 12 Line keys, 5 XML Keys, 48 Digitally programmable BLF locations, support up to 4 GXP2200EXT side cars, Built in Bluetooth, HD Voice, EHS, POE and supports 5 way audio conferencing
Powerful enterprise-grade IP phone ideal for busy users with 6 SIP accounts, 12 Line keys, 5 XML Keys, 48 Digitally programmable BLF locations, support up to 4 GXP2200EXT side cars, Built in Bluetooth, HD Voice, EHS, POE and supports 5 way audio conferencing