If you have totally lost connectivity with 7921G, this is the procedure:
Press ... and speakerphone buttons (located on the left and right sides of the phone) together and then power-up the phone. The phone says "Starting recovery mode. Checking firmware."
Now, you must have the USB-cable (CP-CAB-USB-7921G) and the proper drivers installed to your computer. Then you must change your computers IP-address to, for example 192.168.1.101/255.255.255.0
Use your web-browser to connect to 192.168.1.100 and from there, you can upload a new firmware (.tar file) to the phone. That process takes several minutes. After that, the phone is "factory resetted".
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...