Polycom SoundStructure C16 Design Manual page 485

shown in the following figure. Notice that the channel selection is set to "Mics" - this will ensure the feedback
processing is enabled for all microphones in the system.
Equalizer Settings on the Channels Page
The next step in the system is to configure the AEC references properly for each microphone.
The table top microphones will have AEC references that are their adjacent left/right zones. For instance
Zone 1 and Zone 6 microphones will have Zone 1 and Zone 6 amplifiers selected as their two references,
Zone 2 and Zone 5 microphones will have Zone 2 and Zone 5 amplifiers selected as their references, and
Polycom, Inc. 485