- Flexible connectivity options: USB for VoIP calls, deskphones (with adapter, part number 900102126), cellular phone/tablets (with accessory cable), and headsets with 3.5mm plug- OmniSoundHD- Superior audio quality- LCD high-resolution color display- Switch and combine connections on the LCD display- Multiple languages in the telephone & quick reference guide- Record meetings on a memory card- Future-proof can be upgraded- Two-year manufacturer s warranty - Reception Area: up to 12 people (320 sq ft)