Currently for Debian amd64 Buster and Raspberry OS Buster

To install:

echo "deb https://kc1kcc.com/repos/asl_builds buster main" > /etc/apt/sources.list.d/kc1kcc_asl_builds.list

wget -O - http://kc1kcc.com/repos/apt.gpg.key | apt-key add -

apt update

apt install asl-asterisk asl-dahdi