This document provides instructions for installing CaudalFin E1/T1/J1 cards on Linux. It outlines downloading and compiling the necessary drivers, libraries and software. The key steps are: 1. Install basic development tools and libraries 2. Download, compile and install the CaudalFin DAHDI drivers 3. Download, compile and install the libpri library 4. Download, compile and install Asterisk 5. Configure and test the installation