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
Set up Intelligent Proximity for content sharing (page 4 of 5)
About Proximity
The Proximity feature is switched Off by 
default, because the use of third-party 
speakers may need additional testing for 
Proximity to work as expected. In rare 
cases the ultrasound may cause audio 
artifacts. If so, consider to decrease the 
maximum ultrasound volume with the 
Audio > Ultrasound > MaxVolume setting.
When Proximity is switched On, the 
video system transmits ultrasound pairing 
messages.
The ultrasound pairing messages are 
received by nearby devices with Proximity 
clients, and triggers the authentication 
and authorization of the device.
Provided that you have verified that 
Proximity is suitable in your setup, 
Cisco recommends - for the best user 
experience - that Proximity always is 
switched On
*
.
In order to get full access to Proximity, 
the Proximity services (Proximity > 
Services > ...) must be Enabled as well.
The Proximity indicator
You can see the Proximity indicator on the screen as long 
as at least one Proximity client is paired with the system.
The indicator doesn't disappear immediately when the last 
client unpairs. It may take a few minutes.
* 
We recommend not to use a headset, if you have 
switched on Proximity (ultrasound).
Enable Proximity services
1.  Sign in to the web interface, and navigate to Setup > 
Configuration.
2.  Go to Proximity > Mode, and switch Proximity On. 
The video system starts sending ultrasound pairing 
messages.
3.  Enable the services you want to allow. Only Wireless share 
from a desktop client is enabled by default.
In order to fully utilise the Proximity functionality, we 
recommend that you enable all services.
Place calls and control the video system: 
•  Go to Proximity > Services > CallControl and choose 
Enabled. 
View shared content on a mobile device: 
•  Go to Proximity > Services > ContentShare > ToClients 
and choose Enabled. 
Wireless share from a desktop client: 
•  Go to Proximity > Services > ContentShare > FromClients 
and choose Enabled.