Go back to 500-007 - Implementing Cisco TelePresence Video Solution, Part 1

Question :-

You have configured your Cisco TelePresence Codec C90 but discover unwanted noise during use. What best practice will help avoid this problem?
Connect only one device at a time to an input and avoid daisy-chaining.
Recycle the power on your system after adding each additional input.
If you are not using an input, turn it off.
Daisy-chain additional devices using a serial cable to provide separate power supplies.

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