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composedTitleVoipNow Cloud Communications Services Deployed on a Single Node
keywordscloud communications, cloud communications services, single node deployment, voipnow
titleCloud Communications Services in a Single Node Deployment

VoipNow is a cloud communications platform. You can install it on a single computing node and in a virtualized environment.

This guide contains instructions on how to install VoipNow on a single computer computing node or upgrade the software deployed on a single computernode.

Table of Contents

NameFast Track

If you want to skip reading this document, you can go and use the Command Line Installer.

It provides adequate


support for all environments.


Hardware compatibility list

Before you start the installation, make sure that your hardware is supported by checking the the Hardware Compatibility List (HCL).

By using virtualization,  you you do not need to worry anymore about the hardware your virtual machine runs on!



VoipNow is designed to take advantage of server virtualization techniques. Virtualization is at the foundation of cloud services and VoipNow is a software system designed for the cloud.

Therefore, we strongly we strongly recommend to install VoipNow in a virtualized environment. We support VMware vSphere, Parallels Virtuozzo, OpenStack or Citrix XenServer.


All public cloud services use virtualization. If you use such a cloud service, it's not important what technology is used.


Operating system

VoipNow is compatible with the Linux distributions:

  • Red Hat Enterprise Linux 6 Update 6 and newer 7.x and newer (x86_64)
  • Red Hat Enterprise Linux 7 Update and newer 8 (x86_64)
  • CentOS 67.6 x (x86_64)
  • CentOS 7.1 8 (x86_64)



VoipNow can be installed in multiple ways, based on your environment and requirements. You will find all possible options below.

Your own infrastructure

We assume that you have access to your server in one of the following ways:

  • direct or remote access to physical machine
  • access to a virtualized environment running on a physical machine controlled by a third-party

This usually happens when you are managing you own private cloud.

No operating system installed

Virtualize your server first using one of the recommended virtualization techniques. Once you have virtualized your machine, you can:

  • VMware vSphere - Install VoipNow using the the VMware image.
  • Parallels Virtuozzo - Install VoipNow using the the Virtuozzo templates.
  • Citrix XenServer - Deploy one of the supported operating systems described above and install VoipNow using the the Command Line Installer.

If you do not want to use virtualization at all, or you use any other bare metal virtualization software, you can use the ISO image.  Find out Find out how it's done.

Operating system installed

If the operating system is supported by VoipNow, you must use the the Command Line Installer.

VoipNow Cloud OnDemand

4PSA provides a turnkey cloud solution for customers that do not want to care about the infrastructure, software maintenance or server administration work. 4PSA Cloud OnDemand is available on 6 regions on 3 continents and its reach continues to expand.


titleFree Evaluation Available
Yes, we provide free evaluation for VoipNow Cloud onDemand Solution!

Infrastructure as a service

You can use VoipNow in any public cloud infrastructure (Amazon AWS, Google Compute Engine, Microsoft Azure).  We We provide an Amazon AMI mostly for demonstration purposes, because VoipNow can be easily packed for any cloud.



Plan the upgrade

To guarantee the success of a system upgrade, make sure you:

  • Review the Release Notes  - Make sure that all software improvements are clear. If you need further details, do not hesitate to to ask a question in our monitored GetSatisfaction community.
  • Test the new version - If you upgrade from an old version, is it's always a good idea to install VoipNow on a test environment and make sure that it works as expected.

  • Schedule the upgrade  - Because the software upgrade might temporary affect services, it is highly recommended to perform the upgrade outside business hours.

Perform the upgrade

The upgrade process depends on your installation environment.

VMware vSphere

You must execute the VoipNow Command Line Installer or schedule the upgrade from the VoipNow web management interface.



If you installed VoipNow using the Virtuozzo templates and root access to Virtuozzo machine is available, you can upgrade using the Virtuozzo templates. Otherwise, you must execute the VoipNow Command Line Installer or schedule the upgrade from the VoipNow web management interface.

Citrix XenServer

You must execute the VoipNow VoipNow Command Line Installer or or schedule the upgrade from the VoipNow web management interface.

Any other bare metal or cloud



You must execute the VoipNow VoipNow Command Line Installer or or schedule the upgrade from the VoipNow web management interface. 

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