Audio input on the matrix can’t have any active crosspoint with any output. This will be done automatically when paging destination zones from the main console. Follow this video instructions for MPAGE16. As for the microphone settings, the suggested settings for MPAGE1 / MPAGE1r can be taken as an initial reference and adjustments can be made on the spot to make them more appropriate to the real situation: Check the image by clicking here. It’s recommended to use high-pass filter to reduce manipulation noise. Typically between 90 and 150Hz. Check the image by clicking here.