The Yeastar S20 VoIP PBX features Advanced communication features to create effective business communication experience for small business, connecting to traditional lines, VoIP lines, and cellular networks 20 Users 10 Concurrent Calls Up to 4 FXS/FXO/BRI Ports Up to 1 GSM/3G/4G Channel Security Protected from Internet hackers and viruses with the built-in firewall, TLS, SRTP, and more. Performance Powered by Freescale ARM A9 industrial Future-proof Free lifetime firmware upgrade assures reliability over the years. Easy to use save time with streamlined installation. Manage PBX on the intuitive web GUI Phone Provisioning Automatically provision phones from Yealink, Snom, and more to save deployment time. Flexible Modular Design With Yeastar S-Series, all the telephony interfaces are modular and customizable, Yeastar S20 support 2 onboard module slots to custom FXS, FXO, ISDN BRI, GSM/3G/4G. FXS Module FXO Module PSTN Lifeline BRI Module GSM Module 3G Module 4G Module App center. Easy access to a wealth of PBX features. Learn more about the powerful apps >
