Yeastar S20 Entry-level VoIP PBX System

Yeastar S20 Entry-level VoIP PBX System - User Count: 20 - Max Concurrent Calls: 10 - Max FXS Ports: 4 - Max FXO/BRI Ports: 4 - Max GSM/3G/4G Ports: 1 - Max 4G (Data) Ports: 1 - VoIP Trunks: 20 - Ethernet Interface: 2x 10/100Mbps - Voicemail: 5000 min (Expandable) - External Storage Support: TF Card - Desktop, Wall-Mountable - S20 VoIP PBX - 12 Months Limited Warranty