Liberté Linux: Mission-critical stealth communication
Liberté Linux is a secure, lightweight, and easy to use Gentoo-based Linux distribution intended as a communication aid in hostile environments. Liberté installs on a USB key, and boots on any computer or laptop.
Combination Telephony Engine (presently Asterisk) PBX (in progress FreePBX) and AutoDialer (presently Vicidial) loaded onto Gentoo with detailed instructions. From blank machine to up and running in roughly 3 hours (mostly compile time, by advanced user)