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cisco: factory reset cisco ip phone 7911
Step 1 Unplug the power cable from the phone and then plug it back in.
The phone begins its power up cycle.
Step 2 While the phone is powering up, and before the Applications Menu button flashes on and off, press and hold #.
Continue to hold # until the message LED on the handset flashes on and off in sequence in red.
Step 3 Release # and press 123456789*0#.
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