Design & Build
What you need to know
What is Ozeki Phone System
Ozeki Phone System is a software for Windows that transforms a computer into a communication server. Ozeki Phone System lets you build applications like PBX, VoIP gateway, IVR and ACD.

It can be used for voice calls, video calls, SMS messaging and new-, revolutionary channels like real time communication through webbrowsers and mobile phones.
Connect Mobile Phones
Connect Desktop Phones
Connect Telephone Networks
Connect SMS Services
Connect Websites
Manage Calls
VoIP PBX Features
Product details
Product name Ozeki Phone System
Category Communication software
OS Windows 10, 11, 8, 7, 20XX
Setup On-site installation
PDF brochure OzekiPBXGuide.pdf
PPT slideshow OzekiPBX.ppt
Prezi OzekiXE.prezi
VoIP technology SIP 2.0
Text to speech 26 languages
SMS technology SMPP, GSM 07.07
Webphone tech. Flash, HTML5
Call capacity 1000 calls/node
SMS throughtput 500 SMS/second/node
Max. SIP clients 4000 clients/node
User interface Webbrowser (HTTP/S)
Display 1280X800 or better
Supported Chrome, Microsoft Edge, Firefox, IE, Safari
CPU | RAM Min. 2GHz, 64bit | 2GB
Hard disk space 300 MB free space
Prerequisites Hardware requirements
Based on Ozeki VoIP SIP SDK
Framework .NET 4.0
Functionality Feature list
More information Full datasheet

In order to get technical assistance, please create an account at and open a support ticket. If you already have an account click on "sign in".

Take a step into the future with Ozeki Phone System XE
Resell Ozeki software products, such as Ozeki VoIP SIP SDK, Ozeki NG SMS Gateway and Ozeki Phone System XE. Read more
If you provide a SIP 2.0 VoIP service, you can become a registered Ozeki Phone System XE provider. Read more
Ozeki partners are outstanding companies providing high quality VoIP hardware compatible with Ozeki 10. Read more
Use VoIP services, VoIP devices and VoIP software. Find out how to connect offices through the Internet. Read more
Look for SMS Providers, find out how to setup SMS messaging, and how to use smartphones and tablets as mobile extensions. Read more
Find compatible hardware devices to connect Ozeki Phone System XE to the telephone network. Read more
Find out quickly and easily through our great video explanations how to build a powerful VoIP communication system. Read more
This page allows you to select the appropriate license for your business requirements. Read more
Get information on the Ozeki after sales programme. Find out all you need to know about technical support. Read more
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