upgrade
apt-get update && apt-get upgrade -y && reboot
installation of the packets
apt-get install build-essential wget libssl-dev libncurses5-dev libnewt-dev libxml2-dev linux-headers-$(uname -r) libsqlite3-dev uuid-dev
runter laden der tar archive DAHDI, libpri and Asterisk
cd /usr/src/
wget http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete/dahdi-linux-complete-current.tar.gz
wget http://downloads.asterisk.org/pub/telephony/libpri/libpri-1.4-current.tar.gz
wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-11-current.tar.gz
unpack
tar zxvf dahdi-linux-complete*
tar zxvf libpri*
tar zxvf asterisk*
Install DAHDI
cd /usr/src/dahdi-linux-complete*
make && make install && make config
Install libpri
cd /usr/src/libpri*
make && make install
Install Asterisk.
cd /usr/src/asterisk*
./configure && make menuselect && make && make install && make config && make samples