Nortel Networks NN10300-020 - Manual (Page 90)

90 Adjusting the sleep timer
The time increases or decreases each time you press the key.
4 Continue to press the Up or Down key until the time you want
appears in the display.
5 Press Exit to return to the main display.
The sleep timer is reset.
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Carrier VoIP
Nortel IP Phone 2007 User Guide (CICM)
NN10300-020 02.03 Standard
7 March 2008
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