AASTRA DT292 for MD Evolution User Guide EN - Manual (Page 19)

18 MD Evolution – Cordless DT292
Important
Networks (Menu Option)
The menu option
Networks
should only be used for administration
purposes by Aastra 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 logout, the phone must be logged on
again by a service technician.