D15329.08 SX20 Administrator Guide CE9.2, NOVEMBER 2017.   www.cisco.com — Copyright © 2017 Cisco Systems, Inc. All rights reserved. 
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Cisco TelePresence SX20 Quick Set  Administrator Guide
Change the persistency mode
Change the persistency settings
All persistency settings are set to Persistent by default. You only 
have to change these settings if you want to make them Non-
persistent.
1.  Click the radio buttons to set the persistency for 
configurations, call history, internal logging, local phonebook 
(local directory and favorites) and IP connectivity (DHCP) 
information.
2.  Click Save and reboot....
The video system restarts automatically. After the restart, the 
behavior changes according to the new persistency settings.
Logs, configurations, and other data that was stored 
before you switched to Non-persistent mode, are NOT 
cleared or deleted.
Sign in to the web interface and navigate to Security > 
Non-persistent Mode.
Persistency mode
Configurations, call history, internal 
logs, local phonebook (local directory 
and favorites list), and IP connectivity 
information are stored by default. 
Because all persistency settings are set 
to Persistent, a system restart does not 
delete this information.
Generally, we recommend you NOT to 
change the persistency settings. Only 
change to Non-persistent mode if 
you have to prevent users from being 
able to see or traceback to any logged 
information from the previous session
In Non-persistent mode, the following 
information is lost or cleared each time 
the system restarts:
•  System configuration changes
•  Information about placed and 
reveived calls (call history)
•  Internal log files
•  Changes to the local contacts or 
favorites list
•  All IP related information (DHCP) from 
the last session
Information that was stored before 
changing to Non-persistent mode 
is not automatically cleared or 
deleted. You must factory reset 
the video system to delete such 
information.
There is more information about 
performing a factory reset in the 
► Factory reset the video system 
chapter.
Check the persistency status
The active radio buttons show the current persistency status of 
the video system.
Alternatively, you can navigate to Setup > Status, and then open 
the Security category to see the Persistency status.