Protected from Internet hackers, viruses with built-in firewall, TLS, SRTP, and more. Powered by Freescale ARM A9 industrial grade quad-core CPU processors. Free lifetime software/firmware upgrade assure reliability over the years. Save time with streamlined installation. Manage PBX on the intuitive web GUI. Automatically provision phones from Yealink, Snom, VTech, and more. With Yeastar S-Series, all the telephony interfaces are modular and customizable, S50 support 4 onboard module slots to custom FXS, FXO, ISDN BRI, GSM/3G/4G.

  • 50 Users
  • 25 Concurrent Calls
  • Up to 8 FXS/FXO/BRI Ports
  • Up to 4 GSM/3G/4G Channel