Yeastar MyPBX S20

20 Extensions (SIP\IAX), 16 Concurrent calls (max), 4 Analog ports (FXO\FXS), 4 BRI ports, 1 10/100Base-T Ethernet LAN port, 1 10/100Base-T Ethernet WAN port, 32 VoIP Trunks, 3000 min Voicemail, 32 IVR, T.38 FAX support