[asterisk-users] Codec problems when using G.723

[Thomas Winter]

On Sunday 09 November 2008 20:14, Eric "ManxPower" Wieling wrote:
> The best (and maybe only way) is to set your client and your service
> provider to only do G.723.

Really, thats not the way it should work.

How I can find out the codec of an incomming call?

Is there any way to use ${SIP_CODEC} to try to change to G.723 and then check 
success?
If OK use provider with only allowed G.723 and if not use provider with 
allowed alaw and ulaw?