Install AVR 3808 telnet

The Denon AV receivers can be controlled via a serial port or via Ethernet.

Install xPL audio-video controller

Install CPAN Net::Telnet:

su
perl -MFile::Find=find -MFile::Spec::Functions -Tlw -e 'find { wanted => sub { print canonpath $_ if /\.pm\z/ }, no_chdir => 1 }, @INC' 2> /dev/null | grep -i telnet
apt-get install libnet-telnet-perl

Download the AVR controller script. Move it to xPL scripts directory:

su
SCRIPTS_BASE_DIR=/home/control/Documents/Controls
mv xpl-avController-DenonAVR-telnet.pl $SCRIPTS_BASE_DIR
chown control:users $SCRIPTS_BASE_DIR/*.pl
chmod 775 $SCRIPTS_BASE_DIR/*.pl

Monitor xPL messages:

su control
SCRIPTS_BASE_DIR=/home/control/Documents/Controls
$SCRIPTS_BASE_DIR/xpl-monitor.pl -vfd

In a second window, test the AVR controller:

su control
SCRIPTS_BASE_DIR=/home/control/Documents/Controls
$SCRIPTS_BASE_DIR/xpl-avController-DenonAVR-telnet.pl -v -n loungeAmp

In a 3rd window, test the commands:

su control
SCRIPTS_BASE_DIR=/home/control/Documents/Controls
$SCRIPTS_BASE_DIR/xpl-send.pl -d dspc-ampDenon.loungeAmp -c media.basic mute=on
$SCRIPTS_BASE_DIR/xpl-send.pl -d dspc-ampDenon.loungeAmp -c media.basic mute=off