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App Opensips repo to sources lists apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 049AD65B echo "deb https://apt.opensips.org bullseye 3.2-releases" >/etc/apt/sources.list.d/opensips.list echo "deb https://apt.opensips.org bullseye cli-nig
install all required Asterisk dependency packages apt -y install git curl wget libnewt-dev libssl-dev libncurses5-dev ipset subversion libsqlite3-dev build-essential libjansson-dev libxml2-dev uuid-dev Download Asterisk tarball cd /usr/src