GXP Series IP Phones – GXP2170 Product Description GXP21706 SIP accounts, 12 lines Dual-switched 10/100/1000 Mbps ports, integrated PoE 5-way audio conferencing Integrated Bluetooth ® Compatible with GXP2200 Extension Module See also different: Business Conferencing – GMD1208 Business Conferencing – GVC3210 GXP Series IP Phones – GXP1610(P)/GXP1615 Unified Communications – GRP2603(P)