As the case of mine was I've set-up a conference room with 4 microphones totally, as one 2nd gen phone, chain with one MicPod, and two wireless handheld microphone as my clients requesting.
However by this issue as I mentioned on topic will cause the circulation from speaker to both mics then would enhance the echo infinity.
On the other side, even though the codec was in sleep mode, the signal from Audio-In was also bypass to the speaker-out port directly, can anyone help me to solve these issue??
Thank you very much!