Yeastar S-20 IP Phone System PBX

Yeastar S20-000 can register up to 20 Extensions, to handle 10 Concurrent Calls. Expandable with optional FXS FXO GSM Modules Works with any standard SIP Phones including Cisco, Grandstream, Yealink, Snom. Yeastar S20 is a stand-alone PBX system with unrivalled range of features for business with less than 20 users. It’s built to be simple to use and powerful in production. 20 Users 10 Concurrent Calls Up to 4 FXS/FXO/BRI Ports Up to 1 GSM/3G/4G Channel 20 P Trunks