I am having trouble with IPCC express codec negotiation, it always uses G729. I have tried everything I can think of to change this in Call Manager to G711. I can see that the codec used under system parameters is G729, does that mean that it will only use G729.
I have configured the CTI ports in a region that uses G711. Is there a way of changing this codec, a re-install is a possibility but I would like to know it is going to work first.
Any assistance will be greatly received