The Epygi UC20 IP PBX is designed for offices with as many as 32 users. This PBX can support up to 32 IP devices and 10 concurrent calls. SIP trunking allows for the UC20 to connect directly to an ITSP with no additional equipment. The UC20 includes a firewall and SIP Intrusion Detection for optimal security. E1, T1, FXO, ISDN BRI and FXS ports can easily be provided using the Epygi QX Gateways.