Business Collaboration Solution

  • Genuine multi-tenant PBX
  • FREE VoIP SDK for iOS, Android, Windows, macOS, Linux, WebRTC
  • Sharing screen, sending file, picture, voice and video message
  • IM and Presence
  • Integrated FREE Contact center
  • Integrated FREE Conference likes ZOOM
  • FREE UC client app: iOS, Android, Windows, WebRTC
  • Scalable and high availability
  • High performance - handles 10K simultaneous calls per server
  • Cloud ready with popular cloud platform: Azure, AWS, UCloud, GCE
  • Provided REST API allows easy integrate with 3rd applications
  • Easy Installation and Management: Windows installer and Linux docker
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All-In-One Unified Communications

PortSIP PBX is a software-based VoIP PBX that offers the business collaboration solutions, including audio, video calling, Instant Messaging, presence, rich text chat, WebRTC, sharing screen, sending file, picture, voice and video message, Mobile push notifications features.
PortSIP PBX integrates call center features that help you satisfy the most demanding of customers.
Integrated the free video conferencing, at no extra cost, share your screen for presentations & online classrooms.
A purchased SIP PBX License is packaged with the Giveaway of PortSIP VoIP SDK and Softphone App!
If you are a large service provider looking for the UCaaS solution which support 1M+ users, please try PortSIP UCaaS.
PortSIP PBX v12.4

Multi-tenant, Cloud-ready VoIP PBX

PortSIP PBX is a high performance PBX which can handle 10K simultaneous calls, offers genuine multi-tenant capabilities, which allow service providers to work on a single infrastructure. Individual tenants are divided by virtual partitions, each of which stores all of the individual tenant's data, configurations and customized settings, making it easier to host the cloud PBX.

Despite the centralized control for all tenants and extensions, each tenant still has independent control of configurations and settings as if it was hosted on a single dedicated server for VoIP PBX.

Easy Installation and Management

PortSIP PBX aims to provide Easy Installation and Management VoIP PBX for Unified Communications. It doesn’t require extensive telecom knowledge or training, which can be easily installed and managed.

  • Handle 10K simultaneous calls on per server
  • Scalable and high availability
  • Follow the wizard with a few clicks to setup VoIP PBX
  • Configuration templates for supported IP Phones, SIP Trunks
  • Support Linux (docker container) and Windows
  • Integrated the visual SIP trace server
  • Easy backup and redundancy to boot with Hyper-V or VMware
  • Support popular cloud platforms: AWS, AZURE, Ali Cloud, UCloud
  • Support Spanish, Italian, French, German,Greek,Dutch,Danish,Portuguese,Chinese, Brazilian Portuguese
PortSIP Make Unified Communications Easy

Unified Communications Made Easy

PortSIP PBX takes your business communications to the next level, helping to improve collaboration, boost productivity, increase mobility and enhance the customer experience.  PortSIP PBX offers the rich features for Unified Communications.
  • Client app for iOS, Android, Windows, macOS, WebRTC
  • Sharing screen
  • Sending file, picture, audio and video message likes WhatsApp
  • Presence, Instance message, rich text chat
  • HD audio and video call
  • HD video conferencing
  • Mobile push notifications
  • iCallKit integrated

Mobility with PUSH notification

Especially PortSIP PBX support PUSHs notification, which eliminate the need to keep the client app in mobile phone background and reduce battery consumption.

  • Mobile PUSH notification for call and messaging
  • Sending file, picture, voice and video message likes WhatsApp
  • Answer calls from mobile or IP Phone or Windows Softphone
  • Take your office extension with you anywhere.
PortSIP PBX Mobility
PortSIP PBX integration

Seamless integration

Because PortSIP PBX provides rich REST APIs, which allows to manage the VoIP PBX from any programming languages. It’s a flexible way to provide different kinds of applications with data formatted in a standard way.

  • Full REST APIs provided
  • FREE award-winning VoIP SDK
  • Easy to integrate with your currently used ERP or CRM system
  • Meet integration requirements that are critical to building systems
  • Data can be easily combined

Call flow troubleshooting

PortSIP has been building its SIP Trace Server base on the open-source project HOMER, which provides key information in troubleshooting SIP Trunks, SIP endpoints, and other SIP related issues. It provides a place to:

  • Access singularly to retrieve SIP captures via Web UI
  • Centrally store SIP capture data across many hosts
  • More intuitively filter SIP capture data and correlate the data to the dialog/transactions each request/response is part of (immensely useful!)
  • Gracefully age dated capture data you don’t want to persist for very long (though persisting longer term can be configured very easily)
  • Charts! glorious charts!

Read the guide: Trace server - A Better Way to Debug PortSIP UC

PortSIP Trace Server

Top Reasons For Choosing PortSIP VoIP PBX

Not forked from open source PBX

Instead of being forked from open source PBX, PortSIP PBX is developed by PortSIP team, which offers high-performance, enables handle 10K simultaneous calls per server that's easy to host the cloud PBX.


PortSIP PBX is capable of handling 10K simultaneous calls per server, and offers genuine multi-tenant capabilities, which allow service provider to host only one PBX instance to provide virtual PBX services to customers.

Rich Communication Services

PortSIP PBX provides Rich Communication Services, which enables the app  to sharing screen, sending files, pictures, voice and video messages as it works like WhatsApp.

Video Conferencing

PortSIP PBX integrated the Video Conferencing, it works like ZOOM, you can easy to join conference or invite the participant by one click.  the SIP standards video conferencing and collaboration solution that transforms your communications, increases productivity, slashes travel expenses, boosts customer service and propels sales!

Business Collaboration

PortSIP PBX keeps your organization connected with seamless collaboration across distributed teams. No matter where employees are located, organizations are seeking stronger employee engagement and customer experiences to enable more productivity and greater business agility.

Native WebRTC

Unlike most other products use WebRTC Gateway to transform between WebRTC and SIP,  PortSIP PBX uses WSS transport to handle SIP signaling for WebRTC directly, use PortSIP unique DTLS-SRTP pipeline to bridge audio and video between WebRTC and SIP, brings excellent communicate experiences to users!