I compiled this manual from several official Freeswitch documentation pages, which is great place to start, but all of them are missing full steps - for example latest one at this time is missing post installation steps, but it is covered in older documentation, what is fine, but sometimes is hard to find, so I believe it will be nice to have all of this info just in one page. :)

1) We will need to install dependencies:

apt-get update && apt-get install -y curl
curl https://files.freeswitch.org/repo/deb/debian/freeswitch_archive_g0.pub | apt-key add -
echo "deb http://files.freeswitch.org/repo/deb/freeswitch-1.6/ jessie main" > /etc/apt/sources.list.d/freeswitch.list
apt-get update
apt-get install -y --force-yes freeswitch-video-deps-most
# because we're in a branch that will go through many rebases it's
# better to set this one, or you'll get CONFLICTS when pulling (update)
git config --global pull.rebase true

2) Getting source from git:

cd /usr/src/
git clone https://freeswitch.org/stash/scm/fs/freeswitch.git -bv1.6 freeswitch.git

3) Now we need to install Freeswitch:

cd freeswitch.git
./bootstrap.sh -j
make install

4) We will download sound-files:

make cd-sounds-install cd-moh-install

5) Add user and change user owner of necessary folders:

adduser --disabled-password  --quiet --system --home /usr/local/freeswitch --gecos "FreeSWITCH Voice Platform" --ingroup daemon freeswitch
chown -R freeswitch:daemon /usr/local/freeswitch/
chmod -R ug=rwX,o= /usr/local/freeswitch/
chmod -R u=rwx,g=rx /usr/local/freeswitch/bin/*

6) We need to create symbolic link for freeswitch binary file, create missing folders, change rights and etc:

ln /usr/local/freeswitch/bin/freeswitch /usr/bin/freeswitch
mkdir /etc/freeswitch
ln /usr/local/freeswitch/conf/freeswitch.xml /etc/freeswitch/freeswitch.xml
chown freeswitch:daemon /etc/freeswitch
chmod ug=rwx,o= /etc/freeswitch
mkdir /var/lib/freeswitch
chown freeswitch:daemon /var/lib/freeswitch
chmod -R ug=rwX,o= /var/lib/freeswitch

7) Now we need to copy default file and init file and update access rights:

cp /usr/src/freeswitch.git/debian/freeswitch-sysvinit.freeswitch.default /etc/default/freeswitch
chown freeswitch:daemon /etc/default/freeswitch
chmod ug=rw,o= /etc/default/freeswitch
cp /usr/src/freeswitch.git/debian/freeswitch-sysvinit.freeswitch.init  /etc/init.d/freeswitch
chown freeswitch:daemon /etc/init.d/freeswitch
chmod u=rwx,g=rx,o= /etc/init.d/freeswitch

8) Following step is not mandatory, but it is much easier when you can just run fs_cli from shell, otherwise you will need to run /usr/local/freeswitch/bin/fs_cli or to add freeswitch bin directory to $PATH.

ln /usr/local/freeswitch/bin/fs_cli /usr/bin/fs_cli

9) Now you need to update /etc/init.d/freeswitch accordingly(lines 23-27):


10) Now we need to make sure that freeswitch starts automatically after reboot:

update-rc.d freeswitch defaults

11) You can start freeswitch:

service freeswitch start

12) On this point you have up and running freeswitch, please do not forget to change default password for default extensions in /usr/local/freeswitch/conf/vars.xml