P-Series Software PBX

The Easy-first
Self-hosted PBX System

Yeastar self-hosted open-source PBX system

Easy, Optimal, Scalable PBX Software

Meet all your communication needs in a single system. Yeastar software-based PBX solution includes all you need, out of the box.

Full list of industry-leading features with web, mobile, and desktop clients.

Easy and modern GUI powering point-and-click administration.

Bring your own SIP trunks, phones, and others with auto-provisioning support.

Self-hosted in your own private server and stay in complete control.

Software PBX Solution

Packed with 100+ features with industry-leading usability and reliability.


Get advanced call control and never miss a call.


Intelligent call routing, auto attendant, IVR, call recording, voicemail, time conditions, and more advanced features.

Anywhere anytime connectivity with Linkus desktop, mobile, and web app.

Visual operator panel for receptionist & supervision requirements.


Call Center

All call center features for agents and supervisors at no extra cost.

Call Center

Self-service IVR, queues, and ring groups.

Queue Panel for all call data & agent and supervisor tools in one interface.

Wallboard &  real-time performance monitoring.

Queue callback, survey, reporting, and more call center features.


Video Conferencing

Start or schedule meetings with anyone easily in clicks.

Video Conferencing

No-hassle, web-based video conferencing.

Screen sharing and in-meeting chat.

Full host controls, waiting room, and passcode protection.

Meeting schedule and bulk email invitation.

No downloads. Encrypted communications.


Omnichannel Messaging

WhatsApp, SMS, and team chats, all in one interface.

Omnichannel Messaging

Help your customers across multiple channels, in one single tab.

WhatsApp & SMS messaging.

Chat assignment & transfer.

Match CRM contacts as messages come in.

Keep a central record of customer conversations.



Out-of-the-box integrations to streamline your business workflows.


Free embedded calling app in Microsoft Teams

Rich CRM & helpdesk integrations

Microsoft 365 integration

Custom development with Open APIs and SDKs

More out-of-the-box integrations


Self-hosted on Your Server

Have your IT team deploy solution in less than a day. The full-featured Yeastar PBX software is ready to run on different cloud environments.

Point and click setup

Keep control with your own trunks and numbers

Automatic system upgrade and backup

Self-host in your cloud server or on-premise

Save big on license fees and maintenance

Recommended Cloud Servers

Google Cloud, Amazon AWS, Microsoft Azure, Vultr, Digital Ocean, Alibaba Cloud, and more

Google Cloud, Amazon AWS, Microsoft Azure, Vultr, Digital Ocean, Alibaba Cloud

Virtualization Supports

VMware, Hyper-V, KVM, and Proxmox

Virtualization Support

Work the Way You Do with a Peace of Mind

Enable Remote Working

Remote-enabled your teams and connect remote locations & SIP devices with encrypted and trouble-free remote access service.

Built-in Security

TLS and SRTP encryption, firewall, automatic/static IP defense, SBC, 2FA, restricted country access, and more to safeguard you from attacks.

Maximized Uptime

Solid PBX hot standby redundancy to keep your business calls continuing as usual even in case of unexpected server failure.

Central Management for Partners

Reach, manage, and monitor your fleet of customer-premises PBXs with ease. Yeastar empowers partners with a fully-fledged remote management portal with features such as PBX monitoring, task management, and more.

Status Dashboard & PBX List

Bulk PBX Auto-provisioning

24/7 Monitoring & Alerts

One-click Remote Access

Feature-rich PBX Software. Flexible Plans.
Amazing Value.

Standard Plan Enterprise Plan Ultimate Plan

Deployment Mode Appliance Appliance, Software,
Appliance, Software,

Telephony Features

Call Forwarding

Call Monitoring (Listen/Whisper/Barge-in)

Call Parking

Call Pickup

Call Transfer (Attended/Blind)

Call Waiting

Call Flip/Switch

IVR (Multi-level/Multi-lingual/Time-based)


Ring Group

Paging & Intercom

Conference Rooms

CDR & Basic Reports

Dial by Name


Caller ID

CID-based & DID-based Call Routing

DID (Direct Inward Dialing)

DND (Do Not Disturb)

DOD (Direct Outward Dialing)


Business Features

Call Recording

Call Allow/Block List

BLF Support

Busy Camp-on

Business Hours & Holidays


Custom Prompts

Distinctive Ringtone

Music on Hold

MOH Playlist & Streaming

T.38 Fax

TAPI Driver

Fax to Email


Group Voicemail

Voicemail to Email

LDAP Server

PIN List

Speed Dial

Emergency Number

Emergency Notifications

SIP Forking

IP Phone Concurrent Registrations

CTI for Desk Phone Control

Function Keys


Administration & Security

Web-based Management Portal

Graphical Dashboard

Auto Provisioning

Bulk Import & Export

Extension Group & Organization

User Role & Permission

Operation Logs

Event Logs

Event Notifications

Backup and Restore


Built-in SMTP Server

AMI (Asterisk Manager Interface)

Network DriveOnly supported on the Appliance Edition

SNMP Support


SRTP & TLS Call Encryption

Auto & Static Defense

Global Anti-hacking IP Blocklist


Password Policy Enforcement

Two-factor Authentication (2FA)

Allowed Country IP's & Codes

Outbound Call Frequency Restriction

Unified Communications

Linkus UC Clients

Linkus Web Client

Linkus Mobile Client (iOS & Android)

Linkus Desktop Client (Windows & MacOS)

Linkus Google Chrome Extension

Operator Panel

Unlimited Users

Dispatch Active Calls
(Redirect, Transfer, Hang up, Park, Monitor)

Monitor Call Status
(Inbound, Outbound, Extension, Parked Calls, etc.)

Unified Presence

Control Extension Presence


Custom Presence description

Personal & Company Contacts

Audio Conferencing

Voicemail Transcription

Call Pop-up URL

Door Phone Video Preview

Team Chat

1:1 or Group Chat with Colleagues

File & Image Sharing

Push Notification

Sync Across Linkus UC Clients

Remote Access Service Since the Cloud Edition is inherently accessible from anywhere, Remote Access Service is only for the Appliance & Software Edition

Custom PBX Domain Name (FQDN)

Remote & Secure PBX Web Portal Access

Linkus UC Clients Remote Connection

LDAP Server Remote Access

Remote SIP Service Since the Cloud Edition is inherently accessible from anywhere, Remote SIP Service is only for the Appliance & Software Edition.

Hassle-free Remote SIP Registration Register your remote IP phones, branch office PBXs, VoIP gateways, and alike remote SIP endpoints to the PBX easily as if they were deployed on your PBX's intranet.

WebRTC Trunk

No Port Portwarding & NAT Issues

Call Center

Advanced Skill-based Routing & Queue Callback

Switchboard-type Queue Panel

Real-time Wallboard

SLA Monitoring & Threshold Notifications

Insightful Call Center Reports

Omnichannel Messaging

Unlimited SMS Trunks & WhatsApp Accounts Integration

Central Message Inbox

Automatic Contacts Matching

Message to Queue

Chat Assignment & Transfer

Elevate Chats to Calls in One Click

Message Detailed Records

Trunk SMS API for ITSP


PBX-native Contacts Management

Separate Permission Control Per Phonebook

CRM Contacts Synchronization

Call Accounting

Custom Rates Applied to Outbound Calls

Analysis Report on Telecom Expenses

Voicemail Annoucement

Call Notification for Group Voicemails

Listen to Messages & Call Back Directly over the Phone

Never Miss an Urgent Message

Ideal to Support Emergency After-hour Services

CRM Integration

Click to Call CRM Contacts

Incoming Call Popups

Auto Call Journal

Contacts Synchronization

Support for Hubspot, Zoho, Salesforce, Bitrix24, and Odoo

Helpdesk Integration

New Ticket Auto-creation

Click to Call Helpdesk Contacts

Incoming Call Popup

Auto Call Journal

Contacts Synchronization

Support for Zendesk and Zoho Desk

Microsoft 365 Integration

Microsoft Teams Integration

Outlook Integration

Microsoft Entra ID (Azure Active Directory)

User Sync & Single Sign-on (SSO)


PBX Configuration APIs

Call Control APIs

uaCSTA Control APIs

Event Notification APIs

Windows Active Directory Integration

User, Organization Unit, Group Synchronization

Auto Extension Assignment for New User

Single Sign-on (SSO)

Faster and Easier Administration

Video Conferencing

Bulk Email & Instant Link Invitation

HD Audio and Video

Screen Sharing

In-meeting Team Chat

Video Calls

Video Calls on Linkus Web Client

Video Calls on Linkus Desktop Client

Video Calls on Linkus Mobile Client

Linkus Client SDK

Integrate voice calling to any application easily

Web/Browser SDK

Mobile & Pad SDKs: Android, iOS

Desktop SDKs: Windows, MacOS

Feature-rich voice experience HD Calling, Call Control, Call Recording, Call History, Notifications, and more features

Rich, Programmable Code Samples and UI

Secure Authentication with Tokens

Faster and standarized development

Disaster Recovery The disaster recovery feature is supported on the Software Edtion only and requires an additional PBX redundancy server to function. For more information, please contact us.

Cross-region Active-standby Redundancy

Automatic Failure Detection & Fallback

Real-time Data Replication

Secure SD-WAN or VPN Remote Networking

Disaster Recovery The disaster recovery feature requires an additional PBX redundancy server to function. For more information, please contact us.

Cross-region Active-standby Redundancy

Automatic Failure Detection & Fallback

Real-time Data Replication

Secure SD-WAN or VPN Remote Networking

Hotel PMS IntegrationOptional

Room Status Synchronization

Wake-up Call Scheduling

Call Accounting & Minibar Charging

Guest Information and Room Move

Access Trial Portal

Login to a live demo PBX without installation! Get PBX software, your trial license, product documents, and more, all in one place.

Product Inquiry

Got questions about Yeastar products? Send us your message and we will have someone contact you with more details.

Get 30-Day Trial License

Test run the PBX software on your existing on-premise server, private cloud, or public cloud environment.

In this 30-day trial, you will get a PBX capacity of 100 extensions, 25 concurrent calls, and full feature access.

You will also get access to the Trial Portal.

100 Extensions

Full Feature Access

No Contract to Sign

Frequently Asked Questions

What is PBX software?

Software PBX is a software-based telephone system that replaces the traditional hardware-based PBX systems. It leverages the internet connections and VoIP technology, rather than relying on traditional analog phone lines or digital ISDN connections.

Do I need hardware with Yeastar PBX software?

Not necessarily. It can be self-hosted on your own server, which could be a physical server, a virtual machine, or a cloud server. This flexibility allows you to deploy Yeastar PBX software in a way that best suits your business needs, whether you prefer to use existing hardware or opt for a cloud-based environment.

How does software PBX work for a business?

Software PBX uses VoIP technology to handle and route calls over the internet. It replaces traditional hardware-based phone systems, offering features such as call routing, voicemail, and conferencing. It enables businesses to streamline communication, reduce costs, and scale easily while providing flexibility and advanced functionality.

Is Yeastar PBX software suitable for businesses of what size?

Capable of handling up to 10,000 users and 1,000 concurrent calls, Yeastar software PBX is suitable for businesses of all sizes, from SMBs to large enterprises. Its scalability ensures that it can grow with the business, whether it’s a startup with a few employees or a multinational corporation with thousands of users.