6-20
Cisco TelePresence System Release 1.5 Administrator Guide
OL-13676-04
Chapter 6 Troubleshooting the CTS 1100
Managing Hardware Setup
Related Information
For more information about setting up and testing speakers, see the
Cisco TelePresence System 1100
Assembly, Use & Care, and Field Replacement Unit Guide
.
For more system troubleshooting information, see the
Cisco TelePresence System Troubleshooting
Guide
on Cisco.com.
Testing Microphones
The microphones are set up successfully when each microphone registers sound. You must supply sound
at each microphone to complete this test.
Note
The number of audio meters that are shown on the test screen is determined by the number of
microphones that have been configured in Cisco Unified Communications Manager (Cisco Unified CM)
and the version of Cisco Unified CM that you are running.
Go to the following sections to test microphones:
•
Testing Microphones on the CTS 1100, page 6-20
•
Troubleshooting Microphones, page 6-21
•
Related Information, page 6-22
Testing Microphones on the CTS 1100
To set up the microphones for testing on the CTS 1100, follow these steps:
Step 1
Choose Troubleshooting > Hardware Setup.
Sound is not synchronized with
video.
—
Contact Cisco technical support.
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 6-4
Troubleshooting Speakers
Problem
Possible Cause
Possible Solution
