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 5 of 5)
Basic troubleshooting
Cannot detect devices with Proximity clients
• Check if the video system is in standby mode. Ultrasound is
not transmitted if the speakers (for example a TV in standby
mode) are turned off.
• Check the speaker volume. The volume control on a speaker
itself (not the volume controlled with the remote control or
Touch 10) affects the ultrasound volume. If the volume is too
low, the listening devices cannot detect the ultrasound pairing
messages.
• Some Windows laptops are not able to record sound in the
ultrasound frequency range (20
kHz-22
kHz). This can be due
to frequency limitations with the sound card, sound driver or
the internal microphone of the particular device. Refer to the
Support forum for more information.
Audio artifacts
• If you can hear audio artifacts, like humming or clipping
noise, decrease the maximum ultrasound volume (Audio >
Ultrasound > MaxVolume).
Cannot share content from a laptop
• For content sharing to work, the video system and the laptop
must be on the same network. For this reason Proximity
sharing might fail if your video system is connected to
your company network via Expressway, and your laptop is
connected via VPN (VPN client dependent).
Room considerations
Room acoustics
• Rooms with hard surfaces may cause challenges due to
severe audio reflections. Acoustical treatment of meeting
rooms is always highly recommended for the best meeting
experience as well as Intelligent Proximity performance.
• Cisco recommends only one video system with Intelligent
Proximity enabled in a room. Otherwise, interference is likely
to occur, which may lead to problems with device discovery
and session maintenance.
About privacy
In the Cisco Privacy statement and the Cisco Proximity
Supplement you find information about data collection in the
clients and privacy concerns that needs to be considered
when deploying this feature in the organization. Refer to:
► https://www.cisco.com/web/siteassets/legal/privacy.html
Additional resources
Cisco Intelligent Proximity site:
► https://www.cisco.com/go/proximity
Support forum:
► https://www.cisco.com/go/proximity-
support
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