As you said, it is a hidden command and therefore no documents and it is not officially supported - however it is an excellent troubleshooting tool and here are some hints to get you started. You must have "term mon" on.
dsprm 1> ?
help print help message
set set parameters
show show status or stats
debug set debug level
dump dump data structure
start start vfc services
stop stop vfc services
recover recover vfc services
reset reset vfc services
boot boot dsp channel
test test dsp channel
exit exit the command session
dsprm 2> show ?
dsprm 3> show vfc_table
Service Slot Calls vfc_module_ptr _total Chns Allocated
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...