At the time of Presentation Audio is not Coming in sx 20

Hi All,
We have two modes of presentation here –
1-Air Media wireless presentation
2- Presentation via Direct HDMI cable.
We have made use of an Extron HDMI switcher to switch between the 2.
Either mode of presentation successfully gives Audio output when directly connected to displays or when connected through the switcher.
But Audio output fails when send through the Cisco Codec.
We need to do any seetings in codec for allowing audio output.

How are you connecting the Extron to the SX20?  If it's connected to the DVI connector (which is how you would normally feed content in to the endpoint), DVI doesn't support Audio.  You will need to introduce another box between the Extron's HDMI output and the SX20's DVI (+ 3.5mm audio) inputs, or, depending on which Extron you're using, connect a separate 3.5mm audio cable between the Extron and SX20 to carry the audio between the two.
Wayne
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