AASTRA DT590 for MD Evolution User Guide EN - Manual (Page 20)

Important
MD Evolution – Cordless DT590 150
Note: If you enter an incorrect new code three times in a
row, your phone leaves this menu option. To continue the
operation, you have to enter the correct PIN code when
“Authenticate - Enter PIN Code” is displayed.
In other situations, if you enter an incorrect code three times
in a row, your phone is blocked and “Authenticate - Enter
IPEI Code” is displayed. See section “ IPEI Code ” on
page 150 to unblock your phone.
IPEI Code
The IPEI code is a unique code which has been assigned to your
phone (International Portable part Equipment Identity).
If your phone is blocked because an incorrect PIN code has been
entered three times, you can unblock it with the IPEI code.
The IPEI code of the cordless telephone may be needed also to
enable telephone network subscription.
Read out the IPEI code *#06#
Press.
A message box with “IPEI” is displayed followed by the IPEI
number.
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.
Unblock the DT590 ¿ Ь Ы
Enter the IPEI code and confirm.
The phone returns to the menu.
Your phone is switched off.