freeswitch 一个开源的软交换软件，ivr上功能还是非常强大的-Softswitch freeswitch an open source software, ivr the function is very powerful

fusionpbx是freeswitch图形WEB接口。-FusionPBX is an open source project that provides a customizable and flexible web graphical user/administration interface. That takes freeswitch FreeSWITCH and converts it in to a single/multi tenant gateway or pbx syst

freeswitch中加载mod_ilbc库(freeswitch load mod_ilbc)