Yeastar s20 is a stand -alone telephone system offering an unrivalled range of features to small business with less than 20 users. it supports 10 concurrent calls and various combinations of telephony ports including fx s, pstn, isdn bri, and gsm /cdma /3g. powered by the latest processor technology, yeastar's s-series pbx is a trust worthy telephone system with one of the highest mtbf (mean time between failures) in the industry. based on asterisk 13, s-series is born to be powerful and constantly meeting your needs.
compatible with ip phones fanvil, polycom, snom, yealink, vtech as well as further popular voip-terminals
specifications
20 users
10 concurrent calls
up to 4 fxs/fxo/bri ports
up to 1 gsm/cdma/3g/4g channels
voip trunks: 4