PortSIP PBX offers a comprehensive, modern cloud-based unified communications system that seamlessly integrates advanced UC features such as messaging, video meetings, file sharing, and telephony—all in one reliable and user-friendly solution.

A multi-tenant PBX is a modern VoIP-based system designed to support multiple tenants on a single platform. It centralizes control and enables customized usage permissions for different users or tenants.
PortSIP PBX is a high-performance system capable of managing up to 10,000 concurrent calls per server


White-label solutions are products or services developed by one company and sold by another under its unique branding. In this reseller model, the second company applies its branding to the “white” label product and offers it to clients unaware of the original provider
Our rebranding feature enables you to fully white-label your PBX and cloud PBX services, allowing you to customize and make them your own
When choosing a business Unified Communications system, it’s crucial to select a solution that supports all your business collaboration needs. PortSIP PBX is an enterprise-grade collaboration suite that comes as a comprehensive full-stack bundle, offering essential calling, messaging, sharing, and meeting features to support your business now and in the future
Experience the full benefits of high quality, predictable costs, and simplified administration with the power of the PortSIP solution


PortSIP PBX connects people from anywhere, on any device, through a unified architecture that delivers clear voice, video, and data. This all-in-one solution simplifies communication and collaboration, allowing teams to stay connected and productive no matter where they are.
With PortSIP PBX, users can make calls, create and share content, send messages, host conferences, and leverage voice and presence features across multiple devices. This flexibility enhances collaboration and streamlines workflows, allowing seamless transitions between activities and platforms.
Whether on a desk phone, laptop, room monitor, or mobile device, PortSIP PBX ensures a seamless, consistent experience. It prioritizes smooth switching between devices, maintaining high-quality communication and functionality to support efficient teamwork and connectivity.
PortSIP PBX supports a wide range of endpoints, including IP phones, web, mobile, and desktop clients all seamlessly integrated to enable effortless switching between devices
Applications require the ability to adapt to your specific business needs, and to your technical infrastructure. PortSIP VoIP SDK enables you to incorporate UC functionality into your environment by building complete custom applications or integrating with third-party applications.
Using the PortSIP SDKs, your communications can be more productive, reliable, and prepared to deliver the best customer experience.
Our rebranding feature lets you fully white-label your PBX and cloud PBX services, allowing you to customize and brand them as your own
Whether you’re a small business looking to compete at an enterprise level or a large service provider seeking a powerful Cloud Communications solution, PortSIP offers comprehensive collaboration tools. Our solutions include PBX, SBC, Microsoft Teams Direct Routing, WebRTC, audio and video calling, chat and file sharing, video meetings, contact center services, and VoIP SDKs to meet your diverse needs.
The PortSIP Session Border Controller (PortSIP SBC) delivers top-tier communications security and can be easily deployed on popular virtual machine platforms like Azure and AWS
Enabling WebRTC-based clients, PortSIP SBC acts as a bridge between Voice over Internet Protocol (VoIP) networks and modern web services.
Direct Routing for Microsoft Teams
PortSIP SBC supports Direct Routing for individual enterprise Teams tenants and multitenancy scenarios, enabling a hosted service provider model.


It’s more than a contact center; it’s a customer experience hub
The PortSIP user experience (UX) is consistent across both on-premises and cloud applications, ensuring that users in an on-premises deployment enjoy the same client interface and unified calling, messaging, meetings, and team collaboration features when transitioning to the cloud.
PortSIP ensures a seamless and cohesive user experience across all platforms, whether your PBX is cloud-based, hosted, or on-premises.


With PortSIP, you can set aside communication challenges and focus on the benefits your business gains daily by working more efficiently.