Nokia 6310i User Manual page 24

3 Select display 12 in executive mode by keying in 0112 at the
Group/display: prompt.
4 When the test input prompt will be shown on the display, key in
3333 and press OK.
5 Switch power off and on.
If the deactivation succeeded, the text BTS t e st off will be shown.
Legal carrier numbers are:
• GSM900 : 1 - 124
• DCS1800 : 512-885
• EGSM900 : 975 - 1023
NOTE:
Decimal values should be used, for example 1022 = E22, for EGSM
channels as the test input may be shown with a preceding E in other
displays.
HELP display:
22