Which is pretty simple, indeed (exept by -y on apt-get install):

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

 freeswitch-meta-all

After installation, Freeswitch was up and running, but I don't see any /etc/init.d script to start it.

When I killed the process, it automatically restarted!

How does it happen?

Thank you

Valter