How to Reset a Cisco CP 7940G Phone to Factory Default
How to Reset a Cisco CP 7940G Phone to Factory Default
Unplug the power cable from the phone hold down the # key and then plug the power cable in again.
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minutes
Release the # key after the Speaker button is no longer lit.
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hours
Press 123456789*0# (or in some cases this sequence is 3491672850*# ) within 60 seconds after the Headset Mute and Speaker buttons begin to flash.
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minutes
If you enter this key sequence correctly the phone displays this prompt:
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days
Keep network config?
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days