A custom one that does Voice Streaming over non IP network (GSM). I personally consider AMR 4.75 with DTX/CNG features one of the best codec available in terms of bandwidth requirements and voice quality. Consider that AMR codec is completely execute in hardware by the S60 platform, the battery usage it's widely improved. However, other than APS, now PJSIP will have to face a new implementation for the new Voice Audio Services API for Nokia S60 FP2 devices (where APS is deprecated but "it works"). The audio subsystems on Symbian represent a nightmare, since Symbian 8 full-duplex audio capabilities! Fabio Samiul Aftad Chowdhury wrote: > Hi Fabio, > > In which application you are using APS with AMR 4.75 ?? > > Regards, > Aftad