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