Key Features & Specifications Display: 4.3-inch color LCD screen (480 x 272 pixel resolution).Line Capacity: 12 line keys supporting up to 34 line key appearances with pagination. Audio Quality: Polycom HD Voice and Polycom Acoustic Fence/Acoustic Clarity technologies for crystal-clear, noise-reduced sound. Connectivity: Dual Gigabit Ethernet ports (10/100/1000) with PoE (Power over Ethernet) support and pass-through for a PC. Ports: 2 USB ports (rear and side) for USB headsets, Wi-Fi accessories, or call storage, plus an RJ9 headset port with EHS (Electronic Hook Switch) support.
with The Polycom Obi Wireless USB Adapter, Black (89D17AA#AC3)Wireless USB adapter enables USB-equipped VoIP adapters or VVX phones (models with USB ports) to connect to the Internet over a Wi-Fi networkDimensions: 1.57"H x 0.63"W x 0.28"DDesigned to use both the 2.4GHz and 5GHz bands