Your new unified communications telephone is here...but it is not quite ready for use. Please continue using your old phone for the next two weeks while the phone service is moved from the old phone to the new one.
Also, until everyone is on the new system in late May, four digit dialing will be hit or miss. Until then, it is best to use the eleven digit dialing (9+full number).
You can familiarize yourself with some of its new features by referring to the reference guide document and making internal calls within your department. As soon as your new phone is ready for use, someone with IT will let you know.