[Asterisk-Users] Prevent transcoding

[Simon Woodhead]

Hi folks,

Is anyone aware of a way to prevent transcoding or better still apply 
some kind of weighting to codec selection based on other channels in the 
call? Let's say we support g729 and gsm, a peer supports both and a 
client supports one of them. We're seeing calls frequently coming in on 
one and being transcoded to the other whilst it would be much more 
efficient to pass it straight through for the negligible bandwidth 
saved. Is there any way of achieving this?

Thanks,
Simon

PS - before anyone suggests re-inviting, not doing so is intentional!