Bcg729 is a software G729A encoder and decoder library written in C, developed by Belledonne Communications, the company supporting the Linphone project. It was written from scratch and is NOT a derivative work of ITU reference source code in any kind. It can be executed on many platforms, including both ARM and x86 with very decent performances. libbcg729 supports concurrent channel encoding/decoding for multi-call applications such as conferencing.