Yeastar IP PBX | 50 Users


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.

Flexible Modular Design

S50 VoIP PBX Modular Design

With Yeastar S-Series, all the telephony interfaces are modular and customizable, S50 support 4 onboard module slots to custom FXS, FXO, ISDN BRI, GSM/3G/4G.

50 Users
25 Concurrent Calls
Up to 8 FXS/FXO/BRI Ports
Up to 4 GSM/3G/4G Channel

Protected from Internet hackers,
viruses with built-in firewall, TLS,
SRTP, and more.

Powered by Freescale ARM A9
industrial grade quad-core CPU


Free lifetime software/firmware upgrade assure reliability over the years.

Easy to use
Save time with streamlined
installation. Manage PBX on the intuitive web GUI.

Phone provisioning
Automatically provision phones
from CiscoYealinkPanasonic and more.

Linkus Mobile Client Stay Connected anywhere anytime

Coordinated with S-Series VoIP PBX, Linkus Mobile Client makes
your Android or iOS mobile phone an office extension.

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. Learn more about the business-enhancing features.

  • 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 Goup
  • SIP Forking
  • SLA
  • Speed Dial
  • Time Condition
  • User Portal
  • User Privileges
  • Video Calls
  • Voicemail
  • Voicemail to Email
  • VPN Server App
  • Learn more about features

At Yeastar, we strongly believe that small and mid-sized business communication needs to be simpler, more reliable, and more cost-effective. Our VoIP PBX & Gateway solution empowers you and your business to improve efficiency and reduce communication cost with new levels of quality and experience.