AASTRA 7433ip for MX-ONE User Guide EN - Manual (Page 33)

IP P HONE FOR MX-ONE™
33 6/1553-DBC 433 01 Uen D 2012-02-22
Note: It is important that you do not disconnect the phone power supply
while the new software is being downloaded and saved. If a
power failure occurs, the software must be downloaded again.
3.6 Free Seating
Free seating is a feature that enables you to log on to your IP extension
from any IP phone that allows temporary or free users by using your own
extension number. This means that the IP phones automatically work as
free seating phones within the network.
Using the Free Seating feature by entering * 11 * authorization code *
extension number # is not applicable.