Software installation ===================== As operating system we have choosen Debian Jessie, since all the software components we use provide packaging for it. OpenSIPS_ --------- We got OpenSIPS_ installed via following commands: :: wget -O - http://apt.opensips.org/key.asc | apt-key add - echo "deb http://apt.opensips.org/debian/stable-2.1/jessie opensips-2.1-jessie main" > /etc/apt/sources.list.d/opensips.list apt-get update apt-get install opensips opensips-json-module opensips-restclient-module Once installed we proceed with loading the configuration out of specific tutorial cases bellow. .. _OpenSIPS: http://www.opensips.org/