Yeastar P550 PBX System

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.

  1. Attractive price/performance ratio
  2. An easy approach to fill the UC gap
  3. Experience built for everyone
  4. Embrace boundless communications



Share on facebook
Share on whatsapp
Share on twitter
Share on email


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

Linkus UC Clients: Any Device, Anywhere

Driven through a set of applications for Windows, MAC, Android, iOS, and web browsers,Linkus UC Clients enable P-Series PBX users to easily turn mobile phones and desktops into office extensions as well as make audio and video calls right from the web browser. 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

  1. One number reach on any device
  2. See the status of your colleagues
  3. Play voicemails directly
  4. Click to call from web pages and CRMs
  5. Company-wide & personal contact entries
  6. 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.

  1. Initiate and participate meetings right from the browser
  2. No need for additional applications and plugins
  3. Invite your colleagues and clients via meeting links
  4. Hear and see other participants in full HD
  5. Share your screen for live presentation
  6. Group chat instantly in the sidebar

Catering to SME Service Center

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.

Operator Panel: for More
Effective Call Handling

The Operator Panel is a visualized console for receptionists to quickly manage incoming calls based on the real-time availability of employees. Simply drag and drop to dispatch calls to extensions, ring groups, and queues – all from your web browser. Advanced call controls, such as transfer, park, pick up, hang up, monitor, etc., are also supported to provide the utmost convenience.

Intelligent Design for Unparalleled User & Management Experience

Reliable and secure remote access service

Ensure consistent in-office communication experience for the remote workforce by facilitating secure remote connection without complex configurations.

NFC write/read for IP address Configuration

Simply scan the Yeastar logo on the appliance with the NFC function on your mobile phone and quickly configure the PBX’s IP address from your phone.

Role-based Granular ground permission

Assign employees different user roles to grant specific access privileges to the right individuals while everyone can manage their own settings.

Extension group for Extra Flexibility

Add users to extension groups, make them visible to designated people, and give them customized permissions according to various business needs.

Smart Voice mail handling

Customize how to be notified when receiving a voicemail and how to handle it upon the notification based on user preferences.

Expanded Presence Status Options

Take advantage of enriched presence status, use temporary settings to cope with more scenarios, and switch agent status automatically.

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 Plan and Ultimate Plan require additional subscriptions.

What to Expect in the Coming Months

We have been planning a series of amazing features to the P-Series which will make it a more versatile “PBX-Plus-More” system for SMEs.

  1. Chat
  2. CTI
  3. CRM Integration
  4. Cloud Version
  5. Software Version

Stay tuned for more


Base Users / Max Users 50
Max Concurrent Calls 25
Base / Max Call Center Agents 50
Max FXS Ports 8
Max FXO/BRI Ports 8
Max GSM/3G/4G Ports 4
Max E1/T1/J1 Ports
Expandable D30 0


Technologies are constantly revolutionizing the way businesses communicate and interact. More and more SMEs realize that they need something beyond just a PBX in their digital transformation strategy. The aspiration to remain competitive press them to look for a system that breaks down the barriers of distance and embraces flexibility and customization. For SMEs that have higher expectations of a sophisticated communication system, they need a professional, reliable, and adaptable PBX system in place. Lack of efficiency-enhancing features, poor user experience, and inability to adapt to the fast-paced business environment make a communication system less desirable

PBX Plus More Values and Possibilities

Yeastar addresses the challenges through the P-Series PBX System, a “PBX Plus More” product that allows businesses to have uninterrupted communications at all times in a fullyfledged system. Beyond just a PBX, it provides SMEs with visualized call management, video communications, advanced call center features, unified communications applications, anywhere anytime connectivity, and everything practical yet outperforming across mobiles, desktops, and browsers.

Balancing costs and future growth, P-Series requires a lower total cost of ownership, less training, and fewer management efforts, whether making a Phone System transition or starting from the ground up.

Third-party communication resources including IP Phones, CRM, collaboration tools can also be integrated easily with PSeries to form a cohesive communication and collaboration solution, and break the boundary of systems

Optimized with the right set of features, ease of use and management, future-proof flexibility and adaptability, P-Series unifies voice, video, applications, collaboration and more to push boundless communications for SMEs.

Beyond just a PBX

  1. Always-on connectivity with high performing Unified Communications
  2. Regardless of distance and the choice of device
  3. Superior telephony features covering the must-haves to nice-to-haves
  4. Integrated video conferencing for engaging remote meetings
  5. Streamlined operations with visual call activities
  6. Panel-based administration that makes things straightforward
  7. Granular permission based on different user roles
  8. Pioneered in excellent and consistent user experience
  9. Remarkable functionality for SMEs at a better price
  10. Built-in security mechanism to minimize system vulnerabilities
  11. An integrated model that embraces more possibilities

1.PBX Plus UC Clients

Designed to enhance communication experience and efficiency, Linkus UC Clients allow P-Series PBX users to easily access a comprehensive suite of calling, conference, voicemail, presence, enterprise contacts, collaboration from a single interface using mobile phones, desktops, and web browsers. Employees can stay connected with colleagues and customers where, when, and however they prefer.

2.PBX Plus Video Communications

P-Series PBX System makes remote face-to-face communications instant, simple, secure, and engaging with the integrated 1:1 web video call and video conferencing features. Through a multimedia environment for interactive virtual conferences, SMEs can benefit from a more engaging meeting experience along with the integrated screen sharing, in-meeting team chat, and more.

3. PBX Plus Call Center

P-Series PBX System introduces an inbound call center solution to improve agent efficiency, responsiveness, and ultimately customer satisfaction for SMEs running service centers. Besides standard communications features, Call Distribution, Queue Panel, Wallboard, SLA, and Call Reports are all designed to support more proactive performance monitoring, reporting, and management.

4. PBX Plus Presence & IM

As fundamental parts of unified communications, Presence and IM help SMEs realize contextual collaboration and level up productivity. The Presence feature in P-Series PBX comes with rich information about users’ availability and great flexibility in switching the status while the IM feature, along with file sharing, complements other forms of communication and prompt employee engagement.

5. PBX Plus Operator Panel

The Operator Panel is a visualized console for corporate operators and receptionists to quickly handle incoming calls based on the realtime availability of employees. They can simply drag and drop on the panel to dispatch calls to extensions, ring groups, and queues. Besides, the flexible rolebased permissions make it helpful under various scenarios by facilitating great effectiveness.

PBX Plus Contacts Directory

P-Series PBX System makes it easy and intuitive to organize contacts for SMEs. Users can both add external contacts to create a centralized, company-wide directory and manage their personal contact entries, benefiting from the caller ID match and speed dial. Either company or personal contacts will be synced across Linkus UC Clients, enabling easy access and dialing for in-office, mobile, and remote workers.

PBX Plus Remote Working

P-Series PBX System helps SMEs adapt to the new norm of working from home by enabling BYOD mobility, reducing security and network administration challenges, supporting remote control and management, and combining team collaborations. With teleworking friendly features available out of the box, the dispersed teams unified under the same PBX system can remain engaged and productive.

PBX Plus Integrated System

Besides built-in functionalities, PSeries PBX System also works perfectly with 3rd party systems, including standard SIP endpoints, CRM, collaboration tools, etc., delivering a unified experience with unmatched simplicity and new possibilities. Breaking the barriers among a wide variety of systems, P-Series PBX allows SMEs to unleash the true power of business communications.


Basic Plan (included with the appliances)
Business Features

  • BLF Support
  • Business Hours & Holidays
  • Call Allow/Block List
  • Call Recording
  • Custom Prompts
  • Distinctive Ringtone
  •  DNIS
  •  Emergency Number
  •  Emergency Notifications
  •  Mobility Extension
  •  Music on Hold
  •  MOH Playlist
  •  Microsoft Teams Integration
  •  PIN List
  • Remote Extensions
  •  Speed Dial
  •  T.38 Fax
  •  Fax to email
  •  Voicemail
  •  Voicemail to email
  • Personal Voicemail Greeting
  • WebRTC Audio Call

Telephony Features

  • Call Forwarding
  • Call Monitoring
  • Call Parking
  • Call Pickup
  • Call Routing
  • Call Transfer (Attended &
  • Call Waiting
  • Caller ID
  • CID-based & DID-based Call
  • Conference Rooms
  • CDR & Basic Reports
  • Dial by Name
  • DID (Direct Inward Dialing)
  • DOD (Direct Outward Dialing)
  • DND (Do Not Disturb)
  • DISA
  • IVR
  • Intercom
  •  Queue
  •  Ring Group

Administration & Security

  •  Auto Provisioning
  •  Web-based GUI
  •  Dashboard
  •  Granular User Role
  •  Bulk Import & Export
    (Extension, Trunk, Route,
  • Extension Group
  •  Built-in SMTP Server
  •  Event Logs
  •  Event Notifications
  •  Network Drive
  •  Backup and Restore
  •  Operation Logs
  •  Secure Communications
    (SRTP & TLS)
  •  Troubleshooting
  •  Security
  •  Password Policy Enforcement
  •  Auto Defense
  •  Static Defense
  •  IP Blocklist
  •  Security Alerts via Email

Unified Communications

  •  Linkus Mobile Client (iOS &
  •  Linkus Desktop Client
    (Windows & MacOS)
  •  Linkus Web Client
  •  Click to Call Chrome Extension
  •  Linkus Select & Dial with
  •  Company & Personal Contacts
  •  Audio Conferencing
  •  Unified Messaging
  •  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
  •  Switch Business Hours

Enterprise Plan (requires additional subscription)

All Features in the Basic Plan

+ Call Center

  •  Switchboard-type Queue Panel
  • Real-time Metrics on Wallboard
  • SLA for Performance Measurement
  • Insightful Call Center Reports

+ Remote Access Service

  • Yeastar-supplied Domain Name
  • Remote and Secure PBX Web Portal Access
  •  Linkus UC Clients Remote Connection
  • Consistent In-office Unified Communications Experience

Ultimate Plan (requires additional subscription)

All Features in the Basic & Enterprise Plan

+ WebRTC Video Call

  • Direct 1:1 Web Video Call from Linkus Web Client
  • HD Audio and Video
  • Seamless Video/Audio Call Switch
  • Shrinkable Call Window

+ Video Conferencing

  •  Bulk Email & Instant Link Invitation
  • HD Audio and Video
  • Screen Sharing
  •  In-meeting Team Chat

P-Series Appliances General Specifications

Appliances P550 P560 P570
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
Transport Protocol UDP, TCP, TLS, SRTP
Voice Codec G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC
Video Codec H263, H263P, H264, MPEG4, VP8
DTMF In-band, RFC4733, RFC2833, SIP INFO
NFC Read/Write Yes Yes Yes
Company Contacts  50,000 200,000 500,000
Ethernet Interfaces  2 x (10/100/1000 Mbps)
Hard Disk No 1 SATA (Up to 2TB)
USB  1 (Up to 2TB)
Power Supply AC 100-240V

50/60HZ 0.6A max

AC 100-240V 50/60HZ 1.5A max
Size (L x W x H) (cm) 34 x 21 x 4.4 44 x 25.2 x 4.4 44 x 25.2 x 4.4
Weight  1.64 KG 2.37 KG 2.38 KG
Form Factor 1U Rackmount
Environment Operation Range: 0°C to 40°C, 32°F to 104°F
Storage Range: -20°C to 65°C, -4°F to 149°F
Humidity: 10-90% non-condensing


Additional information

Weight 1.64 kg
Dimensions 34 × 21 × 4.4 cm


There are no reviews yet.

Be the first to review “Yeastar P550 PBX System”

Your email address will not be published. Required fields are marked *


One click


Send us a message