Hardware and software requirements

Ozeki Phone System is the most powerful software PBX ever designed to meet the highest corporate communication needs with quality and reliability. To perfectly take advantage of the cutting-edge VoIP, SMS and Web functionalities, your IT system need to comply with some hardware and software requirements. Learn the prerequisites for Ozeki Phone System below.

Ozeki Phone System for Windows

Recommended Hardware


  • Intel core i5/i7 or equivalent AMD CPUs
  • Quad core


  • 8GB RAM

Hard disk

  • 300 MB available free space


  • 1280X800 or higher resolution monitor


  • Ethernet
  • WiFi (802.11 b/g/n)

Software recommended

Operating System

  • Windows 10
  • Windows 11
  • Windows 2022 Server
  • Windows 2019 Server
  • Windows 2016 Server
  • Windows 2012/2012 R2
  • Windows 8

Additional software


  • SIP: 5060, 5061, TCP, UDP
  • Graphical user interface: 7777 TCP
  • Webphone: 7779 TCP

Cloud PBX

Ozeki Phone System (PBX) can be hosted on any of the following cloud platforms:

  • Amazon Web Services (AWS)
  • Google Cloud Platform (GCP)
  • Microsoft Azure (Azure)
  • Alibaba Cloud


Virtual environments

  • Oracle VM Virtualbox
  • VMWare
  • VMWare ESXi
  • KVM
  • MS Virtual PC
  • Hyper-V
  • Parallels
  • QEMU
  • or any other virtual machine where you can install any of the Windows versions that were listed above

More information