Mitsubishi Electric AT&T T250 User Manual page 51

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To change the Security Code (for entry into the Security menu),
Press
1
Enter the Security Code and press OK softkey.
2
Select 2 Security Code.
3
Enter the New Code, using 4-8 digits, and press OK softkey.
4
The screen will prompt you to reenter the same code to
confirm.
Enter the code again and press OK softkey. If the first and
5
second codes match, the screen will display "New Security
Code Accepted." If the codes do not match, the screen will
indicate "not changed."
Press OK softkey or End/Back key to return to previous
6
screen.
To change the Unlock Code (for unlocking the phone),
Press
1
Enter the Security Code and press OK softkey.
2
Select 3 Unlock Code.
3
Enter the New Code, using 4 digits, and press OK softkey.
4
The screen will prompt you to reenter the same code to
confirm.
Enter the code again and press OK softkey. If the first and
5
second codes match, the screen will display "New Unlock
Code Accepted." If the codes do not match, the screen will
indicate "not changed."
Press OK softkey or End/Back key to return to previous
6
screen.
In Data Mode only, to exchange the Encryption key between the Gateway
(proxy server) and the phone,
Press
1
Enter the Security Code and press OK softkey.
2
Select 4 Encryption.
3
and select 4 Preferences, 9 Security.
and select 4 Preferences, 9 Security.
and select 4 Preferences, 9 Security.
Perform this function only if instructed to do so by your service provider.
Default = 00000000
Default = 0000
51

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