#Rename original sources.list file and create new sources.list

mv /etc/apt/sources.list /etc/apt/sources.list.orig

touch /etc/apt/sources.list


#re-add sources to the sources.list (excluding the DVD)

echo "deb http://security.debian.org/debian-security stretch/updates main contrib" >> /etc/apt/sources.list

echo "deb-src http://security.debian.org/debian-security stretch/updates main contrib" >> /etc/apt/sources.list

echo "deb http://deb.debian.org/debian/ stretch-updates main contrib" >> /etc/apt/sources.list

echo "deb-src http://deb.debian.org/debian/ stretch-updates main contrib" >> /etc/apt/sources.list

echo "deb http://deb.debian.org/debian/ stretch main contrib non-free" >> /etc/apt/sources.list

echo "deb http://downloads-global.3cx.com/downloads/debian stretch main" >> /etc/apt/sources.list


#add-Intel wireless repos
echo "deb http://httpredir.debian.org/debian/ stretch main contrib non-free" >> /etc/apt/sources.list


#download 3CX public key for install

wget -O- http://downloads-global.3cx.com/downloads/3cxpbx/public.key | apt-key add -


#updates sources, OS an install net-tools and 3CX

apt-get -y update

apt-get -y upgrade


#install Intel Wifi drivers
apt-get -y install firmware-iwlwifi

#install Net utilities
apt-get -y install net-tools


#install 3CX Server
apt-get -y install 3cxpbx