The default RF settings on the controller have nothing to do with the phone roaming. The phone is completely in control of when it roams.
If you have not enabled static WEP, WPA-PSK, or CCKM (LEAP or EAP-FAST) on the 7920, then you don't have 'fast roaming' anyway. Fast roaming means fast re-auth without having to go back to the RADIUS server (and potentially MS AD, etc.) which can take 1-3 secs per re-association to an AP. Using 802.1x or WPA1/WPA2 Enterprise with user accounts on the controller (local RADIUS) is not much better.
The default setting on the Cisco 7920 (and 7921) phone is to aggressively *NOT* roam because most people don't have fast roaming configured or configured correctly and it is better to roam as infrequently as possible. The problem, as detailed in the VoIPoWireless SRND, is poor voice quality.
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...