wget -O - https://files.freeswitch.org/repo/ubuntu-1604/freeswitch-1.6/freeswitch_archive_g0.pub | apt-key add -
echo "deb http://files.freeswitch.org/repo/ubuntu-1604/freeswitch-1.6/ xenial main" > /etc/apt/sources.list.d/freeswitch.list
# you may want to populate /etc/freeswitch at this point.
# if /etc/freeswitch does not exist, the standard vanilla configuration is deployed
apt-get update && apt-get install -y freeswitch-meta-all
Ref : https://freeswitch.org/confluence/display/FREESWITCH/Ubuntu+16.04+Xenial For manual isnatllation : https://telecom.altanai.com/2012/05/05/freeswitch-sip-and-media-server/