FreeSWITCH™ is developed on Debian 8 10 "JessieBuster" which is the much preferred platform. These instructions for older operating systems are maintained as a courtesy, but are unlikely to work without a great deal of effort.
Debian 7 Package (FreeSWITCH 1.4)
Debian Wheezy Package
CentOS 6 Package
rpm -Uvh http://files.freeswitch.org/freeswitch-release-1-0.noarch.rpm
yum install freeswitch-config-vanilla
yum install sox freeswitch-sounds*