20 lines HD Audio with Opus 5-inch color display Built-in Bluetooth 60 DSS keys Wi-Fi Connectivity - VIA - WF20 Dongle Adjustable screen Dual Gigabit ports Up to 60 DSS key entries (5 pages) Built-in Bluetooth WiFi via WiFi dongle (sold separately) Can be used as a mini PBX to form small DIY communication and security solutions Compatible with major platforms:3CX,