Yealink SIP-T56A - the youngest and most budget model in the line of Yealink SIP phones running Android 5.1.1 OS with a 7 "color LCD-screen with touch-screen. The device is made in a similar way to models SIP-T58A and SIP-T58V design, but differs in lack of support for video calls, installation camera and screen tilt adjustment, as well as the presence of only one USB port. A USB headset, a flash drive for recording conversations and screenshots, or an expansion module Yealink EXP50 .These expansion modules have a second USB port, which allows you to connect two devices at the same time - an expansion module and a wired headset or an expansion module and a USB flash drive. Built-in Bluetooth 4.0+ EDR makes it possible to connect a wireless headset to the device or synchronize it with a mobile device.The device is customized according to the customer's requirements (logos, screensavers on the screen, branded melodies), the system administrator can also install all the necessary applications for effective work and communication. The phone supports power over PoE, but if you connect to a wireless network using the built-in WiFi module, you must connect the power adapter from an electrical outlet (not included).