Grandstream GXP1628, VoIP phone, 3-way, Call Hold, Call Transfer, Call Waiting, Call Forwarding, LCD display, Display 132 x 48 pixels, Security IEEE 802.1X, 256-bit AES, TLS, EAP-MD5, Port 2 x Ethernet 10Base-T/100Base-TX/1000Base-T, Connections Headset jack / RJ-9, Wall-mountable, Table-top , Black. The GXP1628 brings an efficient call environment to any desktop. This phone delivers a an easy-to-use interface and simple design with its 132x48 backlit LCD screen, 2-line/SIP account keys and 8 dual-color LCD BLF/speed-dial keys.