Award-winning VoIP PBX System


Recommend a S-Series model for me.


Robust Feature Set for All of Your Calling Needs
The Yeastar S-Series is designed to help you grow your business by providing plenty of business-enhancing features and functions.

  • App Center
  • AutoCLIP
  • Auto Provision IP Phones
  • Automated Attendant (IVR)
  • Blacklist/Whitelist
  • Billing App
  • Call Back
  • Call Detail Records (CDR)
  • Call Monitor
  • Call Recording
  • Call Routing
  • Call Transfer
  • Conference
  • Distinctive Ringtone
  • Emergency Number
  • Event Center
  • Email to SMS/SMS to Email
  • Fax to Email
  • Find Me/Follow Me
  • Hot Standby
  • Import/Export Extensions
  • LDAP Server APP
  • Mobility Extension
  • Music on Hold
  • Queue
  • Ring Group
  • Remote Management
  • SIP Forking
  • SLA
  • Speed Dial
  • Time Condition
  • User Portal
  • User Privileges
  • Video Calls
  • Voicemail
  • Voicemail to Email
  • VPN Server App

400 more features

Easy Configuration and Management

Fast installations with advanced auto-configuration, plug and play capabilities. Control your phone system with an intuitive Web GUI. Instantly alert through email, SMS, and phone call.
Managed easily from PC, smartphone, or any Internet-enabled device.


Scalable Modular Design

Telephony Modules
FXS extensions module, FXO module, PSTN fallback module, BRI module, and GSM/3G/4G 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.

Linkus Unified Communications App

Linkus is a unified communications app for Windows desktop, Mac desktop,iPhone and Android phones. Designed for Yeastar Cloud PBX and S-Series VoIP PBX, it transforms your desktop and mobile phone into a fully-featured office extension.

  • Available using Windows, macOS, iOS, and Android
  • Make and receive enterprise VoIP calls anywhere anytime
  • Outlook Contacts, Google Contacts, Salesforce CRM and Microsoft Dynamics 365 integrated; more CRM to support
  • Instant messaging and file sharing empowered by Linkus Cloud Service



linkus UC