Yeastar S20 VoIP PBX System for 20 Users

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

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