Cisco CTS 1000 - TelePresence System 1000 Video Conferencing Administration Manual page 261
Telepresence system
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Also See for CTS 1000 - TelePresence System 1000 Video Conferencing:
- Hardware options & upgrade manual (142 pages)
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Chapter 8
Troubleshooting the CTS 1300
Log in to the Cisco TelePresence System Administration interface.
Step 1
Choose Troubleshooting > Hardware Setup
Step 2
Click the Speakers radio button.
Step 3
Click Start to begin the speaker test.
Step 4
Step 5
Click Cycle Through Speakers to have sound cycled automatically for 5 seconds on each speaker.
Step 6
Click Manually Step Through Speakers to test sound on each speaker.
Step 7
Click Next Speaker to progress to the next speaker.
Step 8
Click Stop to end testing.
Troubleshooting Speakers
Use the information in
Table 8-4
Troubleshooting Speakers
Problem
No sound is heard.
Sound heard at wrong speaker.
Sound is not synchronized with
video.
Choppy audio during
double-talk (when both sides are
talking simultaneously).
OL-21845-01
Table 8-4
to troubleshoot problems with speakers.
Possible Cause
Speaker cable is not connected
or is only partially connected.
Speaker cable is not connected in
the correct connector.
—
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.
Managing CTS 1300 Hardware Setup
Possible Solution
•
Check that the red and black pronged ends of the
speaker cable are securely fastened under their
corresponding connectors on the speaker.
Check that the speaker cable is plugged into the
•
correct receptor on the primary codec.
Tug on the plug to see if it is fully plugged in. Push
•
the plug in firmly until a click is heard.
Check that the speaker cable is plugged into the correct
receptor on the primary codec. Plug all speakers into
the primary codec.
Contact Cisco technical support.
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.
Cisco TelePresence System Administration Guide
8-49
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Table of Contents
Troubleshooting
