9-23
Cisco TelePresence System Release 1.6 Administration Guide
OL-13676-05
Chapter 9 Troubleshooting the CTS 3010 and CTS 3210
Managing Hardware Setup
Related Information
For more information about setting up and testing displays, see the following documentation:
•
Cisco TelePresence System 3010 Assembly, Use & Care, and Field Replacement Unit Guide
•
Cisco TelePresence System 3210 Assembly, Use & Care, and Field Replacement Unit Guide
•
For more system troubleshooting information, see the
Cisco TelePresence System Troubleshooting
Guide
on Cisco.com.
Testing the External Presentation Display
By default, presentations are displayed as presentation-in-picture (PiP) on the center screen of
multi-screen main display systems. You can optionally add an external presentation display screen that
displays the presentation instead of displaying it as PiP on the main display screen. This display is
attached to the External Presentation Display HD video connection on the codec. See the following
documentation for more information:
•
Cisco TelePresence System 3010 Assembly, Use & Care, and Field Replacement Unit Guide
•
Cisco TelePresence System 3210 Assembly, Use & Care, and Field Replacement Unit Guide
Note
If the video works for a few minutes and then stops working, your presentation device might use an
unsupported video protocol. To see the list of displays that the CTS 3010 and CTS 3210 supports, see
the release notes for your CTS software version on Cisco.com.
A PiP softkey will be displayed on the phone only if a PiP is active. Pip is not available for audio-only
calls.
To test an external presentation device, follow these steps:
Microphone switches to a
segment that has no one talking.
Phantom switching; microphone
is not calibrated properly.
Run the microphone calibration procedure in the
“Testing Microphones” section on page 9-19
.
Choppy audio during
double-talk (when both sides are
talking simultaneously).
Audio Echo Canceller (AEC)
very briefly mistakes one of the
speech patterns for noise and
cancels it, resulting in choppy
audio.
•
The audio from the remote
side is slightly attenuated
before it is played out the of
the speaker.
•
The echo cancellation
feature removes some of the
sound from the talkers
during the double talk.
Check whether there has been a change in the echo path
(someone has moved the speaker or microphone, or
maybe a laptop directly in front of a mic). Otherwise,
this is expected behavior. The existing filter parameters
should be enough to cancel out the sound from the
speaker. However, during double-talk, echo
cancellation will always remove some sound from the
talker.
Table 9-5
Troubleshooting Microphones (continued)
Problem
Possible Cause
Possible Solution
