Epygi Quadro 2x digital PBX review
The Epygi Quadro 2x packs a lot of features into a unit that’s around the same size as a typical router. Not only is it a fully featured PBX but also a full NAT router with DHCP & DNS servers, a SPI firewall and intrusion detection system, traffic filtering, QoS to ensure that voice traffic is prioritized over other internet traffic, PPPoE and PPPoA support and VPN endpoint supporting IPSec, PPTP, L2TP and 3DES.
The 2x unit as supplied by 3Bit Solutions Ltd in New Zealand has a single RJ11 FXO port for connecting to a regular PSTN telephone line and two FXS ports for connecting regular analogue telephones or a fax machine supporting the T38 protocol. The unit handles 4 IP phones in its factory configuration and this can be expanded with an additional 12 phones by way of an upgrade licence.
Source and more info: geekzone