Fast Installations

Save time with streamlined installation and maintenance tasks using our advanced
auto-configuration, auto-detect and plug and play capabilities.

Easy Configuration


Control and update your phone system with intuitive and graphical UI and point-and-click configuration using S-Series online Configuration Panel. Everything can be managed easily from any Internet-enabled device.

Scalable Modular Design

  • Telephony Modules

    FXS extensions module, FXO module, PSTN fallback module, BRI module, and GSM/CDMA/3G module

  • Expansion Boards

    Supports 4 modules in one EX08 Expansion Board
    Supports 1 E1/T1/PRI port in one EX30 Expansion Board

  • System Capacity

    Expand SIP users and concurrent calls when your business grows with DSP Module.

Robust Feature Set For All of Your Calling Needs


The Yeastar S-Series is designed to help you grow your business by

providing plenty business-enhancing system features and functions.

  • Automated Attendant (IVR)
  • Blacklist/Whitelist
  • Call Back
  • Call Detail Records (CDR)
  • Call Monitor
  • Call Recording
  • Call Routing
  • Call Transfer
  • Conference
  • Distinctive Ringtone
  • Event Center
  • Email to SMS/SMS to Email
  • Fax to Email
  • Find Me/Follow Me
  • LDAP
  • Mobility Extension
  • Music on Hold
  • Queue
  • User Portal
  • User Privileges
  • Video Calls
  • Voicemail
  • Voicemail to Email
  • and more

Reliable System

Powered by the latest processor technology, S-Series 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

S-Series Models

Small business, home office, and mid-sized business will find a model that fits their business needs.

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