Aastra 51i IP Telephone (A1751-0131-10-01)

offers features and flexibility
in an open-standards based, carrier grade basic level IP telephone. With a sleek
and elegant design and LCD display the 51i is fully interoperable with leading
IP Telephony platforms, offering advanced XML capability to access custom
applications and support for high-quality SIP communications.
Part of the 5i Series of IP telephones, the 51i
is ideally suited for light use small and medium business applications such as
lobbies, common areas or individual user environments where single line
high-quality SIP communication is required.