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PBX Plus More

P-Series PBX System

Go boundless. We've elevated business
communications for SMEs.

P-Series PBX System





Contacts Directory Remote Working Integrated System UC Clients Video Conferencing Call Center Presence & IM Operator Panel Plus More Possibilities Plus More Possibilities

A Complete PBX System,
Plus More Possibilities

Customer expectations have soared. Purpose-built for SMEs to fulfill more sophisticated communication needs, P-Series PBX System is a converged system to wrap a suite of services around, including voice, video, applications, collaboration, and more.

Cloud-based and on-premises options An easy approach to fill the UC gap Optimized experience built for everyone Embrace boundless communications

Linkus UC Clients: Any Device, Anywhere

Driven through a set of applications for web browsers, Android, iOS, Windows and Mac,Linkus UC Clients enable P-Series PBX users to make audio and video calls right from the web browser as well as easily turn mobile phones and desktops into office extensions. Use Linkus UC Clients to stay connected and productive whether you are in the office, on the go, or working from home.

All office extension features One number reach on any device See the status of your colleagues One-on-one or group chat with file sharing
Linkus UC Clients Linkus UC Clients
Play voicemails or transcribe them Click to call from any web pages Company-wide & personal contacts Secure remote access via Yeastar supplied domain name

Integrated Video Conferencing:
Interact and Collaborate in Real-time

Not only large enterprises, SMEs also need face-to-face conversations to bring teams and customers closer together regardless of their locations. P-Series PBX System introduces an integrated web-based video conferencing solution with screen sharing and team chat for SMEs to easily conduct multi-party virtual meetings – a smarter way to get things done quicker, enhance team collaboration, and build stronger business relationships.

Initiate and participate meetings right from the browser No need for additional applications and plugins Invite your colleagues and clients via meeting links Hear and see other participants in full HD Share your screen for live presentation Group chat instantly in the sidebar
Integrated Video Conferencing

Economical Call Center Solution

Call center telephony for SMEs doesn’t have to be expensive or complex. P-Series PBX introduces an inbound call center solution tailored for SMEs to optimize agent productivity and boost customer satisfaction in a budget-friendly way.

Call Center Solution


Route incoming calls to the proper queue and the right, available agent based on certain strategies you set up.


Paired with ACD, IVR prompts callers to their desired destinations with customized rules, helping SMEs handle high volumes of incoming calls.

Call Recording

Keep track of every phone conversation to improve the performance of your agents or for compliance with regulatory requirements.

Queue Panel

View real-time display of incoming calls, agent status and other queue-related statistics to help you efficiently handle the calls.


For agents and supervisors to intuitively monitor agent & queue activities in real time and quickly identify any possible issues.


Use detailed statistical reports for multi-dimension performance measurement and gain in-depth insightson efficiency improvement.

More Reasons That People Love about P-Series

Remote Access Service

Consistent in-office communication experience for everyone via the secure and hassle-free remote connection.

Operator Panel

Drag and drop to dispatch incoming calls to extensions, ring groups, and queues based on real-time availability.


Group corporate contacts into several phonebooks and grant permissions to different departments separately.

Chrome Extension

Yeastar Linkus for Google is a Chrome extension that enables you to miss no call, simplify dialing, and increase efficiency.

CRM Integration

Align data and conversations with built-in Zoho and Salesforce CRM integration. Leverage click-to-call, call journaling, call pop-up, etc.

Microsoft Teams Integration

Microsoft Teams Integration

A complete UC&C solution. Meet all internal and external calling needs directly from the Teams app.

The Full Feature List:
From the Must-Haves to the Nice-to-Haves

With a lengthy list of features, P-Series PBX System is able to do a lot more than you expect it to, covering everything SMEs would ask for in daily business communications. Some advanced features are accessible through easy subscriptions as follows.The Basic Plan is included in the appliance while the Enterprise and Ultimate Plan require additional subscription. (See the subscription pricing for different appliance models here.) The Cloud and Software Edition are available in Enterprise Plan and Ultimate Plan.

Basic Plan Enterprise Plan Ultimate Plan

Deployment Mode Appliance Appliance,Software,

Business Features

BLF Support

Business Hours & Holidays

Allowed/Blocked Numbers

Call Recording

Concurrent Registrations for IP Phones

Custom Prompts

Distinctive Ringtone


Emergency Number

Emergency Notifications

Fax to Email

Group Voicemail

LDAP Server

Mobility Extension

Music on Hold

MOH Playlist

MOH Streaming

Organizational Hierarchical Management

PIN List

Remote Extensions

Speed Dial

T.38 Fax

Fax to email


Personal Voicemail Greeting

Voicemail to email

WebRTC Audio Call

Telephony Features


Call Forwarding

Call Monitoring (Listen/Whisper/Barge-in)

Call Parking

Call Pickup

Call Routing

Call Transfer (Attended & Blind)

Call Waiting

Caller ID

CID-based & DID-based Call


Conference Rooms

Dial by Name

DID (Direct Inward Dialing)

DOD (Direct Outward Dialing)

DND (Do Not Disturb)


Paging & Intercom


Ring Group

CDR & Basic Reports

Administration & Security

Auto Provisioning

AMI (Asterisk Manager Interface)

Web-based Management & User Portal


Granular User Role

Bulk Import & Export (Extension, Trunk, Route, Contacts)

Extension Group

Built-in SMTP Server

Hot StandbySupported on the Appliance & Software Edition.

Event Logs

Event Notifications

Network Drive

Backup and Restore

Operation Logs

Secure Communications (SRTP & TLS)



Password Policy Enforcement

Auto Defense

Static Defense

IP Blocklist

Security Alerts via Email

outbound call frequency restriction

Unified Communications

Linkus Web Client

Linkus Mobile Client (iOS & Android)

Linkus Desktop Client (Windows & MacOS)

CTI (Computer Telephony Integration)

Yeastar Linkus for Google Chrome Extension

Microsoft Teams Integration

Linkus Select & Dial with Hotkey

Company & Personal Contacts

Linkus Web Client Function Key

Audio Conferencing

Unified Messaging

Pop-up URL

Headset Integration

Voicemail Transcription

Operator Panel

Unlimited Users

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

Monitor Call Status (Inbound, Outbound, Extension,
Parked Calls,Ring Group, Queue)

Unified Presence

Control Extension Presence Status

Switch Business Hours

Call Center

Switchboard-type Queue Panel

Queue Callback for Reduced Call Abandonment

Real-time Metrics on Wallboard

SLA for Performance Measurement

Insightful Call Center Reports

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

Yeastar Supplied Domain Name

Remote and Secure PBX Web Portal Access

Linkus UC Clients Remote Connection

Remote IP Phone Auto Provisioning

Consistent In-office UC Experience

Advanced Access Control for Further Security

CRM Integration

Incoming Call Popups

Auto Call Journal

Click to Call CRM Contacts

Hassle-free Integration

Support for Zoho, Salesforce, and HubSpot


PBX-native Contacts Management

Separate Permission Control Per Phonebook

CRM Contacts Synchronization

Sync Across Linkus UC Clients

Instant Messaging

On-one-one or group chat

Cross-client synchronization

File sharing & image sharing

Call Accounting

Custom Rates Applied to Outbound Calls

Analysis Report on Telecom Expenses


PBX Configuration

Call Control

uaCSTA Control

Event Notification

Video Conferencing

Bulk Email & Instant Link Invitation

HD Audio and Video

Screen Sharing

In-meeting Team Chat

Web Video Call

Integrated 1:1 Video on Web Client

Seamless Video/Audio Call Switch

HD Audio and Video

Shrinkable Call Window

Cloud Edition Software Edition Appliance Edition

Business Use For Service Providers

Start Your
Free Trial Today

This 30-day trial allows you to experience the ins and outs of P-Series Cloud Edition Enterprise Plan and explore how it transforms communications for your business or your enterprise customers.

Full access to the Enterprise Plan

10 extensions, 10 concurrent calls

No credit card required. No commitment.

Instant activation upon signup.

Turnkey Solution

Designed for channel success, P-Series Cloud Edition Turnkey Solution is a fully managed, serverless offering that enables faster time to market, easier service delivery, and stronger return of investments.

No server needed. Low start-up costs

Based on a high availability architecture

Click to create & scale through YCM

Single-panel-of-glass dashboard

On Your Hardware Platform or Virtualized Environment

Virtualized Environment

Flexible Deployments

Deployed it either as an on-premises option in a company's own data center, virtualized using VMware or Microsoft Hyper-V, or as a cloud service.

Stay in Control

Ensure that your system runs securely and independently. Ideal for businesses with higher requirements on system control.

Easy to Scale

Quickly scale users with flexible license options, leaving you rest assured in the face of significant changes in the staffing level.


Either on a local or cloud server, the time required to keep it up and running is kept to a minimum. Quickly get started with the built-in launch wizard.

Determine Which Model Is Right for You

P550 P560 P570

P Model P Model P Model

Base Users / Max Users 50 100 / 200 300 / 500

Max Concurrent Calls 25 30 / 60 60 / 120

Base / Max Call Center Agents 50 100 / 200 300 / 500

Max FXS Ports 8 8 16

Max FXO/BRI Ports 8 8 16

Max GSM/3G/4G Ports 4 4 6

Max E1/T1/J1 Ports - 1 2

Expandable D30 0 1 2


Learn more details about P-Series PBX System and the subscription plan.

Download Datasheet Configuration Guide Resources

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