
"Roundpin" can be connected to the SIP provider via
Asterisk, or directly, if the SIP provider allows direct
connections from applications that use SIP over WebSocket.
If you need text/audio/video conferences, you will need to 
install Asterisk. Optionally, you can install "Coturn" as a 
STUN server.

Minimum System Requirements:

  - VPS or dedicated server with 1 CPU core and 1 GB RAM. It
  can work on machines with much lower memory, but
  if you want to host video conferences with a large number of
  participants, it's recommended to use at least 1 GB RAM.

  - the LEMP stack. It should also work with Apache but Nginx 
  is recommended.

  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:

  * Asterisk installation: https://www.doublebastion.com/install-asterisk/
  * Coturn installation: https://www.doublebastion.com/install-coturn/
  * 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/
