Tech

Hosted PBX and Virtualization

Published on:

January 4, 2014

In 2014, the hosted PBX industry gained more clarity on key technologies, with virtualization becoming crucial. Virtualization allows several servers to run on the same hardware, making the process faster and more efficient and offering robust failover mechanisms to maintain service, even during hardware failures. Unlike traditional services, PBX systems require real-time response times measured in milliseconds, which means virtual machines must have exclusive CPU control. Vodia’s multi-tenant solution enables the efficient use of resources, offering a scalable hosted PBX service with minimal disruption while keeping deployment costs low and allowing rapid expansion.

It is 2014 and we have a clearer picture of what's important in the hosted PBX business.

Virtualization is one of the key technologies in the server world, which is also sometimes referred to as the “cloud”. It makes it possible to run several servers on the same physical hardware. This makes it possible not only to run servers more efficiently, but to also automatically set up those servers in a matter of seconds without human interaction.

When it comes to the PBX and virtualization there are a few things to consider. In contrast to HTTP and other services, the hosted PBX demands real-time reaction times in the area of milliseconds. This has several important implications that make the difference between mediocre and excellent service.

Virtualization makes it possible to implement an extremely robust failover mechanism that continues service on the same IP addresses even if the hardware crashes. This not only makes it possible to have “eternal” services, it also makes it possible to upgrade the underlying hardware while the service is active. With this technology, calls may stay up - even if they are, for example, in an ACD with minimal service disruption.

Because of the real-time requirements, the hosted PBX virtual machine needs to have exclusive control over the CPU running the virtual host. This means that practically one CPU core can run one virtual machine, something we already saw in 2005 when the pbxnsip project was initiated. It makes it possible to have hundreds of customers running on the same CPU core in a virtual environment. Other PBX solutions designed as single domain solutions need one virtual machine for each customer, even if there are only two extensions on it. This causes a lot higher resource usage, thus higher costs. Additionally, while we are still using IPv4, it also needs a lot more valuable IPv4 addresses than the multi-tenant solution.

The other implication of the real-time nature of the hosted PBX is vicinity. It isn't possible to serve large areas with one big data center. Instead, the virtual machines need to be located close to the customers, with “close” being defined by the ping times. Here the cost of deploying a hosted PBX is a key issue. With the simple architecture of the Vodia PBX, we are in a good position to serve customers all over the world. A new PBX can be deployed in a matter of minutes and even automatically, just like a new virtual machine can be deployed today.

Latest Articles

View All

The Vodia PBX and AI Solutions for Healthcare

AI is rapidly reshaping the healthcare landscape by improving how providers communicate, manage patient information, and deliver care. The Vodia PBX combines unified communications with HIPAA-compliant AI features such as automated appointment scheduling, transcription of patient conversations, multilingual support, and telemedicine capabilities. These tools reduce administrative workload, improve patient compliance, and ensure that critical information is accurately documented and easily accessible. From small clinics to major hospitals, Vodia’s intelligent communication platform streamlines operations, enhances collaboration between staff and patients, and ultimately helps healthcare organizations deliver faster, more efficient, and more personalized care.

October 7, 2025

Improve Customer Experience with Vodia’s Agent Activity Dashboard

Every missed call or unresolved issue can cost your business, making agent performance critical for call center success. The Vodia Agent Activity Dashboard provides real-time insights into agent availability, queue performance, and call metrics, enabling supervisors to quickly identify performance gaps, optimize productivity, and enhance customer experience. Agents receive actionable feedback and targeted training, while teams gain the visibility needed to manage workloads efficiently and maintain high service standards. With live monitoring, historical analytics, and smart queue indicators, Vodia ensures every customer interaction is handled effectively, helping businesses stay ahead of expectations and deliver exceptional support.

September 30, 2025

Vodia Brings the Future of Hospitality Communication to NoVacancy Sydney 2025

Vodia participated in NoVacancy Sydney 2025, Australia’s largest conference and exhibition for the accommodation industry, showcasing its cloud PBX solutions designed specifically for hotels, resorts, and other hospitality venues. With advanced VoIP and AI-driven features, Vodia enables properties to provide guests with seamless, personalized experiences while streamlining operations, reducing costs, and boosting staff efficiency. The company highlighted its recent integration with the Shiji Property Management System (PMS) and Microsoft Teams certification, making it a versatile communication platform for both boutique hotels and multinational chains.

September 26, 2025