AASTRA DT292 for MX-ONE User Guide EN - Manual (Page 10)

Important User Information
DT292 10
PIN code
Your phone is initially provided with a pre-set PIN code (Personal
Identification Number). You should change this PIN code to a
personal PIN code to prevent misuse.
To change the PIN code
Route: Settings » PhoneLock » ChangePIN
ChangePIN
Select. Ь Ы
Press.
EnterOldPIN: is displayed.
Z Ь Ы
Enter the current PIN code (default 0000) and press.
Either EnterNewPIN: or Wrong PIN is displayed. In the latter case,
you have entered a number that does not match the current PIN
code. Z Ь Ы
Enter the four digits of the new PIN code and press.
RepeatNewPIN is displayed.
Z Ь Ы
Enter the new PIN code again and press.
Either New PIN accepted or Wrong New PIN is displayed.
Note the new PIN code for future use.
If you incorrectly enter a new PIN code three times in a row, your
phone leaves this menu option.
In other situations, if you enter an incorrect PIN code three times in
a row, your phone is blocked and PIN Blocked, Unblock? is
displayed. See section “ IPEI code ” on page 11 to unblock your
phone.