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Telephone Systems / Yeastar

Yeastar S100

The Yeastar S100 is a scalable VoIP PBX designed for growing businesses that require greater capacity than entry-level models. It supports up to 100 users (expandable to 200) and provides robust support for traditional and mobile lines, unified communications (UC) features, call recording, IVR, and remote management—all in a compact rack-mountable unit.

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Yeastar S100

Main features

  • Supports up to 100 users (expandable to 200 with D30 module).
  • Concurrent calls: 30 base, expandable to 60.
  • Modular ports supporting up to 16 FXS/FXO/BRI.
  • Up to 6 GSM/3G/4G channels.
  • Up to 2 E1/T1/PRI ports available.
  • Compatible with VoIP trunks, common voice codecs, recording, IVR, voicemail, and intercom functions.

Technical specifications

Base Users / Maximum Users

100 / 200

Concurrent Calls

30 / 60

Maximum FXS/FXO/BRI Ports

Up to 16

GSM / 3G / 4G Channels

Up to 6

E1/T1/PRI Ports

Up to 2

VoIP Trunks

100

Transport Protocols

SIP, etc., TLS/SRTP encryption

Ethernet Interfaces

2 × Gigabit

External Storage

SD card slot / SATA disk for recordings

Format / Mounting

1U rack-mountable

About the brand

With the S-Series, Yeastar has offered robust, modular IP PBX systems for years, providing an excellent balance of quality, price, and a comprehensive UC ecosystem. Although the S100 is officially listed as “end-of-sale” (no longer produced as new), its legacy remains relevant as its recommended replacement, the Yeastar P560, inherits many of its capabilities while adding enhanced functionality and support.

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