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Cisco TelePresence System Codec C90 and Prole 65” Dual using C90 Administrator guide
D14635.05 Prole C90 and Codec C90 Administrator Guide TC4.1, February 2011.
Copyright © 2010-2011 Cisco Systems, Inc. All rights reserved.
www.cisco.com
Audio Input Line [1..4] Channel
Dene whether the Audio Line input is a mono signal or part of a multichannel signal.
Requires user role: ADMIN
Value space: <Left/Right/Mono>
Left: The Audio Line input signal is the left channel of a stereo signal.
Right: The Audio Line input signal is the right channel of a stereo signal.
Mono: The Audio Line input signal is a mono signal.
Example: Audio Input 1 Channel: Left
Audio Input Line [1..4] Level
Dene the audio level of the Line input connector, in steps of 1dB.
See the Audio Level tables in the Physical Interfaces Guide for the codec for a complete overview of
the menu values represented in dB.
Requires user role: ADMIN
Value space: <0..24>
Range: Select a value from 0 to 24dB.
Example: Audio Input Line 1 Level: 10
Audio Input Line [1..4] LoopSuppression
The loop suppression functionality detects whether a delayed signal loop is present from an audio
Line output to an audio Line input on the codec. If a loop is detected the unwanted feedback is
suppressed.
NOTE: Only loops between line output 3 and line input 3, and between line output 4 and line input 4
are suppressible.
Requires user role: ADMIN
Value space: <On/Off>
On: Activate Loop Suppression.
O: Deactivate Loop Suppression.
Example: Audio Input Line 3 LoopSuppression: On
Audio Input Line [1..4] Mode
Set the audio input line mode.
Requires user role: ADMIN
Value space: <On/Off>
On: Enable the Audio Line input.
O: Disable the Audio Line input.
Example: Audio Input Line 1 Mode: On
Audio Input Microphone [1..8] EchoControl Mode
The echo canceller continuously adjusts itself to the audio characteristics of the room and
compensate for any changes it detects in the audio environment. If the changes in the audio
conditions are very signicant the echo canceller may take a second or two to re-adjust.
Requires user role: ADMIN
Value space: <On/Off>
On: Echo Control is normally set to On to prevent the far end from hearing their own audio. Once
selected, echo cancellation is active at all times.
O: Echo Control should be switched O if external echo cancellation or playback equipment is
used.
Example: Audio Input Microphone 1 EchoControl Mode: On
Audio Input Microphone [1..8] EchoControl NoiseReduction
The system has a built-in noise reduction which reduces constant background noise (e.g. noise from
air-conditioning systems, cooling fans etc.). In addition, a high pass lter (Humlter) reduces very low
frequency noise. NOTE: Requires the Echo Control Mode to be enabled for the microphone.
Requires user role: ADMIN
Value space: <On/Off>
On: The Noise Reduction should be enabled in the presence of low frequency noise.
O: Turn o the Noise Reduction.
Example: Audio Input Microphone 1 EchoControl NoiseReduction: On
Audio Input Microphone [1..8] EchoControl Dereverberation
The system has built-in signal processing to reduce the eect of room reverberation. NOTE: Requires
the Echo Control Mode to be enabled for the microphone.
Requires user role: ADMIN
Value space: <On/Off>
On: Turn on the dereverberation.
O: Turn o the dereverberation.
Example: Audio Input Microphone 1 EchoControl Dereverberation: On
Audio Input Microphone [1..8] Equalizer ID
Select the audio input microphone equalizer ID.
Requires user role: ADMIN
Value space: <1..14>
Range: Select Equalizer ID 1 to 14.
Example: Audio Input Microphone 1 Equalizer ID: 1
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Introduction
Advanced conguration
Password protection
Web interface
Appendices
Advanced conguration