To install "Roundpin" you have to first install the STUN server "Coturn" on a VPS or dedicated server, then install "Asterisk", then install "Roundpin". Minimum System Requirements: VPS or dedicated server with 1 CPU core and 1 GB RAM. It can work on machines with much lower specifications, but if you want to host video conferences with many participants, it's recommended to have at least 1 GB RAM. Recommended operating system: Debian 10 or newer. Also, you will need the LEMP stack. It may work with Apache but it has been exclusively tested with Nginx. All the installation instructions mentioned below are for Nginx. Note: You can install and use Roundpin alone, but if you install "Roundpin" together with the other applications of RED SCARF Suite, you will need a VPS or dedicated server with higher specifications: 1 CPU core, 2 GB RAM and 40 GB storage. Complete installation instructions are available on www.doublebastion.com, as follows: * Coturn installation: https://www.doublebastion.com/install-coturn/ * Asterisk installation: https://www.doublebastion.com/install-asterisk/ * Roundpin installation: https://www.doublebastion.com/install-roundpin/ If you want to integrate Roundcube with Roundpin, to be able to open a new email window with one click, to easily send emails to your Roundpin contacts, and to be able to check incoming emails from inside Roundpin, you will need to install a complete mail server by following the detailed instructions presented at the following link: * Mail server installation: https://www.doublebastion.com/install-the-mail-server/