Easy to use, reliable, and feature-rich, S-Series is designed to help small and medium businesses make a giant leap in efficiency and cost savings. The innovative S-Series unleashes the power of unified communications, provides great flexibility with field-upgradable modular design, and allows you to connect to traditional lines, VoIP lines, and cellular networks. Perfectly future-proof, S-Series converges business-enhancing features with free software updates to grow with your business and assures reliability over the years.

ECN is an official Distributor (Electronic Communication Network – Distributer Certificate )of the Yeastar PBX products in South Africa.

S-Series Solutions 


Yeastar S412 is a flexible and modular VoIP PBX engineered for the communications needs of small companies. Yeastar S412 can handle up to 4 CO/BRI lines, up to 12 analog extensions, 2 GSM/3G/4G channels, 8 VoIP extensions, and 4 VoIP trunks, delivering exceptional cost savings, productivity, efficiency improvements and peace of mind.

  • 8 VoIP Users
  • 8 Concurrent Calls
  • 8 Fixed FXS Ports
  • 4 Customizable FXS Ports
  • Up to 4 FXO/BRI Ports
  • Up to 2 GSM/3G/4G Channels
  • Linkus UC Softphone for Desktop and Mobile 


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 FXS, PSTN, ISDN BRI, and GSM/3G/4G.

  • 20 Users
  • 10 Concurrent Calls
  • Up to 4 FXS/FXO Ports
  • Up to 4 BRI Ports
  • Up to 1 GSM/3G/4G Channel
  • Linkus UC Softphone for Desktop and Mobile


Yeastar S50 is a compact and full-featured IP-PBX that comes in a 19’’ 1U rack-mountable chassis. The advanced module-based S50 is capable of supporting ISDN BRI, PSTN, and GSM connectivity, providing VoIP communications for up to 50 users.

  • 50 Users
  • 25 Concurrent Calls
  • Up to 8 FXS/FXO Ports
  • Up to 8 BRI Ports
  • Up to 4 GSM/3G/4G Channels
  • Linkus UC Softphone for Desktop and Mobil 

S-Series VoIP PBX Video Link: https://youtu.be/V60TQNfy8Ws

Key Features and Benefits

  • Linkus Unified Communications App for Desktop and Mobile
  • Works with SIP/IAX2, PSTN lines, ISDN BRI, E1/T1/PRI, and GSM/3G/4G
  • Built-in call recording capability
  • Powerful Apps (add-ons) include Linkus Server, Auto Provision, LDAP, Conference Panel, VPN Server, Billing App, and Hotel App
  • Control and manage customer premises PBX securely with Remote Management
  • Provision IP phones from Yealink, Snom, Fanvil, and more easily and quickly
  • Convenient integration with call center, PMS, and CRM
  • Connect multiple sites and remote users instantly
  • No hidden charges and extra licensing fees
  • Low power consumption (1.8-59.1 watt)


Yeastar Datasheets/Product Brochures: