• Genuine multi-tenant PBX
  • Scalable and high availability
  • High performance - handles 10K simultaneous calls per server
  • Unbeatable Price - unlimited extensions
  • Unique features - sending file, picture, voice and video message
  • Cloud ready with popular cloud platform: Azure, AWS, UCloud, GCE
  • Provided REST API allows easy integrate with 3rd applications
  • Easy Installation and Management SIP PBX
Learn More

All-In-One Unified Communications

Software based VoIP PBX that offers WebRTC, Audio, video, conferencing, Presence, Instant Message, Voice Mail and Mobile PUSH notifications features. Support sending file, picture, voice and video message. It works like WhatsApp!

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.

A Complete, Powerful, Unified Communications Solution

PortSIP is a software-based VoIP PBX that offers complete Unified Communications: audio calling, video calling, Instant Messaging, WebRTC, sending file, picture, voice and video message, Mobile PUSH all in one.

PortSIP PBX in cloud

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 environment) and Windows
  • 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
  • Sending file, picture, audio and video message likes WhatsApp
  • Presence, Instance message
  • HD audio and video call
  • HD video conferencing
  • Inbuilt WebRTC Gateway
  • Inbuilt SBC

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
  • 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

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 send files, pictures, voice and video messages as it works like WhatsApp.

Video conferencing

PortSIP PBX has built-in MCU, the SIP standards video conferencing and collaboration solution that transforms your communications, increases productivity, slashes travel expenses, boosts customer service and propels sales!


PortSIP PBX has in-built SBC (Session Border Controller) which allows easier bridge connection of remote extensions. The SBC delivers all SIP and RTP packets by using only three ports. This simple concept allows PortSIP to overcome firewall or telecom provider issues and hide the topology of PortSIP PBX network.

WebRTC Gateway

PortSIP PBX has integrated WebRTC Gateway, which allows you to make & receive calls or join video conference from web browser without the need to download any plugins, so as to bridges the communications between Internet and SIP.