12-02-2009 06:37 AM - edited 03-18-2019 10:53 AM
How do you reset a 7942 to factory default setting on a Callmgr 4.2(3) sr2b?
12-02-2009 06:50 AM
Make sure you have DHCP and the TFTP you configured has the FW for the phone before attempting this or most likely you'll end up with a brick
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 Speaker button flashes on and off, press and hold #. Continue to hold # until each line button flashes on and off in sequence in amber.
Step 3 Release # and press 123456789*0#.
You can press a key twice in a row, but if you press the keys out of sequence, the factory reset will not take place. After you press these keys, the line buttons on the phone flash red and the phone goes through the factory reset process. Do not power down the phone until it completes the factory reset process and the main screen appears.
HTH
java
If this helps, please rate
www.cisco.com/go/pdihelpdesk
04-01-2014 11:55 AM
Excellent! TYVM this was very helpful!
05-29-2016 08:38 AM
Hi Jamie
I have entered in reset mode but i couldnt get out since i am nat using a router to give me a dhcp for my phone. what do u sugest i should do??
05-29-2016 11:44 AM
you need dhcp and tftp and firmware to be downloaded inside phone
05-29-2016 11:55 AM
You NEED to meet those requirement, if you didn't have, you might end up turning your phone into a brick. As I explained, and Tamir also explained, you NEED to have
DHCP
TFTP
FW
BEFORE you attempt the reset.
05-29-2016 11:54 PM
i managed to get all the 3 requirments and my phone boot up as brand new.............tnx guys for the support
12-02-2009 07:44 AM
Thanks, this is great information. I tried this process and it did not work. DHCP and TFTP are working. I can connect another phone to this port and it works fine. The phone is sitting at the CISCO screen with Copyright 2002-2007.
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