Ericsson DT590 - Manual (Page 11)

11 BusinessPhone – Cordless DT590
Important
Coverage Area
Your organization’s premises are covered by a number of cells
which form the coverage area. You can make and answer calls
anywhere within this area, outside the area you will lose contact
with the system.
Company coverage:
Network (submenu option)
The submenu option Network should only be used for
administration purposes by Ericsson service staff. Using this menu
option may cause a logout from the DECT/GAP network, and no
further calls will be possible.
Note: In case of a network unsubscription, the phone must
be logged on again by a service technician.