Yealink T57W
Yealink T57W is a premium IP phone with a 7" touchscreen display, HD audio, and wireless connectivity. T57W supports 802.11ac Wi-Fi, letting you position the phone anywhere in the office while still having an excellent network connection. T57W also gives you native Bluetooth support for wireless headphones. The large capacitive touch display makes it as simple to operate as a smartphone. Yealink Optima HD gives you rich, wideband audio quality from the hearing aid compatible handset and full-duplex speakerphone. Yealink Acoustic Shield technology sets a virtual perimeter around a speaker or speakers and blocks out sound beyond that perimeter, giving you excelletn background noise reduction.
Yealink T57W uses the open SIP protocol to work with almost any standard following VoIP phone system. It supports 16 lines. T57W gives you advanced features. For example, it supports up to four concurrent calls, which lets you use it in a corded-cordless arrangement using the Yealink DD10K DECT Dongle with a compatible Yealink wireless IP handset. T57W has a USB port for connecting a USB headset, recording calls with a USB stick, or connecting an expansion module. You can connect up to three Yealink EXP50 Expansion Modules. T57W also lets you share content through the phone without the need for a server.