GXP Series IP Phones – GXP1620/GXP1625 Product Description GXP1620/GXP1625 2 SIP accounts, 2 lines Dual-switched 10/100 Mbps ports, integrated PoE on GXP1625 3-way audio conferencing See also different: Wi-Fi Cordless IP Phones – WP816 GXV IP Video Phones – GXV3450 Unified Communications – GRP2613(W) Unified Communications – GRP2610(P)