The FreePBX Sangoma 40 appliance as outlined below and FreePBX Distro. In this configuration the Appliance is recommended for up to 40 extensions and 30 concurrent calls.

Specifications of the Appliance are as followed;
Table Top and Wall Mount with included Wall Mount Bracket
4 Onboard GIG Network Ports
Single 120GB SSD drive
Quad Core Processor
4 GB of Memory
1 Year Hardware Warranty
5in D X 5in W X 2in H
Box size is 11in L X 9.1in W X 3.5in H and weighs 3.5 lbs