The Yeastar S20 – S-Series VoIP PBX for Small Business is a smart communication solution tailored to meet the needs of small enterprises. Built on a modular and scalable platform, it supports up to 20 users and 10 simultaneous calls, offering seamless connectivity through analog, GSM/3G/4G, ISDN BRI, and VoIP trunks. With its intuitive web interface, auto-provisioning, and advanced call features, the S20 ensures reliable and cost-effective business communication. Ideal for growing teams seeking a future-proof telephony system.

Key Features:

• Supports up to 20 users and 10 concurrent calls

• 2 on-board module slots for FXO/FXS/BRI/GSM/3G/4G modules

• SIP and IAX2 protocol support

• Built-in call recording, voicemail, call forwarding, IVR, and more

• Auto-provisioning for major IP phone brands

• Web-based configuration and management

• Compact design ideal for wall or desktop mounting

• Low power consumption and fanless operation for quiet environments