Polycom SoundStructure C16 Design Manual page 498

video participants and to the "Phone 1 Out" remote participants. By changing the content of these submixes
it is easy to change the Room 1 audio routing.
On the channels page, set the AEC reference for all the Room 1 microphones as "Amplifier 1" and for the
room 2 microphones as "Amplifier 2" as shown in the following figure.
AEC Reference for Room 1 Microphones on Channels Page
The routing for Room 2 is done in the matrix without use of the submixes to make it easier to mute or unmute
different crosspoints depending on the room combine state. Another approach would have been to create
additional submixes for the Room 2 microphones and loudspeaker outputs.
Once the matrix settings are configured, the next step is to save these settings to the "Combine" preset by
selecting "Save To New" on the preset page and set the power on preset to be the "Combine" preset.
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