[asterisk-users] Disable transcoding

[Brian]

Hello
I use asterisk realtime, and I can set the order of codec preference on my 
realtime allow column.

If I could disable transcoding, then I can always ensure a passthrough of the 
common codec from origin to destination without transcoding (expensive on CPU) - 
and more or less, force the codec to use by setting the codec preference

So, can I disable transcoding?