PBX Software
The PBX server is based upon the Raspberry PI FREEPBX distro.
This can be found at http://www.raspberry-asterisk.org/downloads/
The device is a Raspberry Pi 3 Model B Plus.
The Raspberry Pi 3+ features:
- A 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU
- Dual-band 802.11ac wireless LAN and Bluetooth 4.2
- Faster Ethernet (Gigabit Ethernet over USB 2.0)
- Power-over-Ethernet support (with separate PoE HAT)
- Improved PXE network and USB mass-storage booting
- Improved thermal management
FREEPBX will actually run on a Raspberry Pi 1, allowing 10 concurrent calls.