AASTRA DT590 for MX-ONE User Guide EN - Manual (Page 9)

9 DT590
Important User Information
Intrinsic safety
The DT590 phone is not specified as intrinsically safe, so do not
use it in areas with a danger of explosion.
Preparing for use
Before using your phone for the first time you have to charge and
connect the battery, see section “ Installation ” on page 95.
Note: Place the phone in the charger and charge it for at
least one hour before using it the first time.
Show IPEI code
Your phone has an International Portable part Equipment Identity
(IPEI) code. This code is unique for each phone, and it is needed for
your system administrator to enable network subscription of your
phone. Furthermore, if your phone is blocked because an incorrect
PIN code has been entered three times, you can unlock it with the
IPEI code.
When your phone is in idle mode, you can display the IPEI code:
*#06# Ь Ы
Dial and press.
The IPEI code (13 characters) is displayed.
Note: Write down the IPEI code for future use. If you cannot
retrieve the IPEI code, please contact your system
administrator. Keep the IPEI code secret to prevent misuse
of your phone.