Description Telephone The 6753i station of Aastra integrates the advanced features for an average IP phone. It has 6 direct function keys, in which you can store the most used numbers so you can compose them with the simple press of a button. It offers excellent audio quality, also its 3-line LCD display with the XML browser allow access to custom applications. The Aastra 6753i is equipped with a large memory capacity for personal agenda and the call log. 53i is dedicated to small businesses for daily use. Specifications Power Supply PoE Protocol SIP 9 lines 6 programmable function keys 3 line buttons with LED Vibration function Presa headphone LCD display 3 lines Forti Browser XML Advanced call management PoE LCD display 3 lines Protocol SIP 6 programmable direct functions 3 line buttons with LED Handle up to 9 lines Vibration function with socket line without lifting the horn High Speaker Full Duplex