AASTRA DT292 for MX-ONE User Guide EN - Manual (Page 90)

Installation
DT292 90
Installation
Check for completeness
Make sure that all the parts are present. If anything is missing,
please contact your system administrator or supplier.
The set contains:
1 Cordless phone
2 Battery
3 Clip
4 Assembly card
Note: It is important to make a note of the IPEI code. The
IPEI code may be needed for unblocking the Cordless
phone if an incorrect PIN code has been entered three
times. See section “ IPEI code ” on page 11 for further
details.