The Aastra 55i  VoIP terminal offers powerful features and flexibility in a standards based, carrier-grade advanced level expandable IP telephone. With a sleek and elegant design, 144 x 75 pixel backlit LCD display and 6 dynamic context-sensitive softkeys, the 55i terminal is fully interoperable with leading VoIP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously. Part of the Aastra family of IP phones, the 55i is ideally suited for moderate to heavy telephone users who require more one touch feature keys and XML based programs.