Polycom SoundStructure C16 Design Manual page 472

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To further simplify the system with an eye towards in-room volume control, another submix "RemoteAudio"

will be created that contains just the remote audio signals - the telephone and the program audio. This way

the in-room volume control can adjust the "RemoteAudio" submix to increase or decrease the level of the

remote audio into the local room. See the following figure for how the new matrix will appear.

Keep in mind that the "RemoteAudio" channel should not be sent to the "Phone Out" signal to prevent the

"Phone In" channel from being routed to the "Phone Out" signal causing a persistent electronic echo of the

telephone talker back to the telephone talker.

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