12 SIP A/C, 8 Line Keys, 3.7″ 480×272, Gigabit, PoE, Android, Built-in WiFi & Bluetooth, Web Browser, Calendar, One-Touch Recording, 3-Party Audio Conference, Optional Corded-Cordless Phone (via IP DECT USB Dongle – DD10K) with Expandable DECT Cordless Handsets (upto 4), w/o PSU