iSAC is a HD codec kit similar to G.722 anthony extracted iSAC codec from WebRTC project and built mod_iSAC on top of it.
How to build
cd to your freeswitch top directory like: cd /usr/src/freeswitch if you have allready bootstraped and configured your freeswitch, then do the following:
- edit modules.conf
- add: codecs/mod_iSAC
save, and do make && make install