Which of the following will not be affected when you issue the xCommand SystemUnit FactoryReset Confirm:
Yes command on a Cisco TelePresence EX, MX, SX, or C-series system? (Choose two.)

A.
call logs

B.
certificates

C.
custom backgrounds

D.
local phonebook

E.
option keys

F.
release keys

G.
ring tones

H.
system parameters

Explanation:
Release keys and option keys will not be affected when you issue the xCommand SystemUnit FactoryReset
Confirm: Yes command on a Cisco TelePresence EX, MX, SX, or C-series system. The xCommand
SystemUnit FactoryReset Confirm: Yes command is used to perform a factory reset on a system. You might
want to perform a factory reset if there is a severe problem with the video system. If possible, you should back
up log files and the current configuration before proceeding with a factory reset.
The following items are deleted when you perform a factory reset:
Call logs
Custom backgrounds
Ring tones
Certificates
Local phonebook
In addition, all system parameters are set to their default values.

Cisco: Troubleshooting Guide TC6.0: Factory reset using SSH, Telnet and serial connection(PDF)
Cisco: Cisco TelePresence System Codec C40/C60 and Profiles using C40/C60, Administrator guide: Factory
resetting the codec (PDF)