[Linphone-developers] How to make linphone accept mime-type "G729" and "G729A"

[kl]

I am wondering how to convince linphone to accept mime-type "G729A" ?

Some systems will send mime-type "G729" ( together with fmtp annexb=no )and 
some will send "G729A". I would like to tread "G729A" as the same as "G729", 
similar to asterisk - where it would accept the remote mime-type "G729" and 
"G729A".

I could go and change coreapi/offeranswer.c, but I thought that will be ugly. 
What is the standard way to accept mime alias ?

Regards.