I am facing an issue related to codec negotiation.Let me explain scenario

 inbound/outbound codec pref list : g722,g729,g711

 late negotiation enabled

 mix inbound outbound codec is enabled

 When call hits FS, i give instant ringback to call which mean g722 codec will be negotiated for early media

Now when callee answers call with g729

FS does transcoding from g722: g729

Instead it should select g729 on both legs and tell aleg to update codec from g722 to g729 to avoid transcoding.