Hi,
I'm taking a try of mod_bcg729 (https://github.com/xadhoom/mod_bcg729). I was able to load the module:
type,name,ikey
codec,ADPCM (IMA),mod_spandsp
codec,AMR,mod_amr
codec,BroadVoice16 (BV16),mod_bv
codec,BroadVoice32 (BV32),mod_bv
codec,G.711 alaw,CORE_PCM_MODULE
codec,G.711...