Suitable for Small Businesses Yeastar S20 is a standalone PBX system with many features specific to businesses with up to 20 users. It is designed to be easy to use and robust in production. 20 users 10 simultaneous calls Up to 4 FXS / FXO / BRI ports Up to 1 GSM / 3G / 4G channels 20 VoIP Trunks
Be a partner to accelerate your business!

Ease of use. Powerful in production.

Communicate the way you want
With the S20 working with the Yeastar Linkus UC softphone and Linkus Cloud Service, experience the ultimate convenience of doing business anywhere and on any device.

Flexible modular design
With Yeastar S-Series, all telephony interfaces are modular and customizable, and the S20 supports adding two module ports to customize FXS, FXO, ISDN BRI, and GSM/3G/4G.

Powerful remote management
Benefit from a highly secure platform for remote and centralized monitoring and management of your PBX system(s). Whether you're an end-user of the phone system or an IT distributor, Yeastar Remote Management is here to free you from technical headaches and reduce IT and maintenance costs.

A powerful feature set designed for your business needs
Additional capacity with App Center : Regardless of the main system framework, App Center allows you to add and manage apps independently for additional functionality such as hotel app, billing, call center integration, etc.

Fully Integrated Features : From basic call routing, IVR to advanced call conferencing and recording, Yeastar S-Series VoIP PBX provides you with comprehensive features without additional licensing fees.
