Yeastar S50 Voip PBX Phone System.

The Yeastar S50 is a rack-mountable VoIP IP-PBX system built for up to 50 users and 25 concurrent calls. This modular device features dual Gigabit WAN/LAN Ethernet ports and an SD card slot for call recording storage. The front panel includes 8 customizable RJ11 telephony ports supporting FXO, FXS, ISDN BRI, or GSM modules. This setup integrates analog lines, digital extensions, and cellular networks. Running on a fanless, low-power design, the S50 provides advanced features like call routing and auto-attendant queues. It natively supports the Yeastar Linkus application to bridge desktop, mobile, and web voice channels.