Yeastar S-Series VoIP PBX

Work Smarter, Easier and Closer with Powerful Unified Communications

easy to use

Easy to Use and Manage

all inclusivefeatures

All-inclusive Features

2uncompromised security

Uncompromised Security

unified communications

Unified Communications

remote management

Remote Management

perfect integration

Perfect Integration


One Platform

All Communications

Experience the ultimate convenience of doing business anywhere, on any device with S-Series VoIP PBX to work with Yeastar Linkus UC softphone and Linkus Cloud Service. Gain the advantage over your competition by combining voice, instant messaging, conferencing, presence, and more…all from one single platform.

All office extension feature

Click/touch to make, receive, transfer or record a call and check voicemails and recordings from anywhere.

Instant messaging & file sharing

Text anyone from your company directory and share file in real-time with ease. Powered by Linkus Cloud Service.

CRM integration

Screen-pop upon calls and more from your Zoho CRM.


See who is available, busy or offline immediately and intuitively with colored status indicator.

One number on all devices

Maintain a single number across devices with Linkus installed on your computer, iPhone or Android phones.

Meet Linkus UC Softphone
linkus app
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Unparalleled Ease of Use and Management

With an intuitive browser-based interface and a robust set of management tools, productivity soars as you focus on your business, not your phone system.

Ease to Use VoIP PBX for Small Business

Scalable Modular Design

Flexible combination of telephony interfaces & Easy future expansion.
Meet S-Series VoIP PBX Module
S-Series VoIP PBX Modules

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.

excellent interoperability

Excellent Interoperability

Use Your Existing IP Phones, SIP Trunk... all at your choice Easily integrate IP phones, hotel phones, SIP paging systems, door phones, and any SIP compliant endpoints, and systems. Proven interoperability with worldwide SIP/PSTN/ISDN trunks; certified with 80+ SIP trunk providers. Work seamlessly with legacy PBX, software-based PBX, or other servers to preserve the existing equipment and capitalize on the new technology Quickly auto provision IP phones from Yealink, Fanvil, Cisco, Snom, Polycom, Gigaset, Grandstream, Htek etc.

Powerful Remote Management

Benefit from a highly secure platform to monitor and manage your PBX system(s) remotely and centrally. Whether you are a phone system end user or a IT reseller, Yeastar Remote Management tool is here to free you from technical headaches and reduce IT & maintenance costs.Learn More
powerful remote managem

Robust Feature Set Crafted for Your Business Needs

Complete Built-in Features Extra Capacity with App Center Rich API for Integration

Complete Built-in Features

From basic call routing, IVR to advanced call conferencing and recording, Yeastar S-Series VoIP PBX provides you with all-inclusive features without extra licensing fees.

See All Features complete built-in features

Extra Capacity with App Center

Independent from the main framework of the system, App Center allows you to add and manage Apps independently for extra functionality like hotel app, billing, call center integration, etc.

Learn More extra capacity with app center

Rich Robust API

Open immense opportunity with rich built-in API interfaces, which allow you to connect your phone system with third-party web applications or software to fulfill specific needs.

Learn More rich robust api

Yeastar On-premises PBX Models

Show Full Chart in Datasheet
S412 S20 S50 P520 P550 P560 P570
Features s412 s20 s50 s50 p550 p560 p570
Users 20 20 50 20 50 Up to 200 Up to 500
Concurrent Calls 8 10 25 10 25 Up to 60 Up to 120
Max FXS Ports 12 4 8 4 8 8 16
Max FXO/BRI Ports 4 4 8 4 8 8 16
Max Cellular Ports 2 1 4 1 4 4 6
Max E1/T1/J1 Ports 1 2
VoIP Trunk 4 20 50 20 100 200 500
Features Basic level Basic level Basic level Higher level Higher level Higher level Higher level


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