Introduction to Ozeki Phone System

Ozeki Phone System is a next generation software-based IP PBX that replaces traditional hardware PBX / PABX systems and first generation software PBX systems. It is the most advanced PBX system you can use in 2024. It is designed to support mobile and fixed communication endpoints and is ready for the demanding requirements of today's software developers and system integrators.

Advanced Technology

Classic PBX systems VoIP PBX systems OZEKI Phone System
1970-2002 2002-2012 2013-
Classic PBX systems Software PBX systems
(1st generation)
Software PBX system
(2nd generation)
Office telephone network
Office LAN
Corporate WAN
Better connectivity
Mobile networks
Office LAN
Office Wifi
Corporate WAN
World Wide Web
2/4 telephone wiring UTP wiring Wiring is optional
(Mobile phones, Wifi, LAN)
Analog PBXs
Digital PBXs
Hybrid PBXs
SIP 1.0, SIP 2.0
SIP 2.0
SMS (SMPP, GSM 03.38)
Web (WebRTC, HTML5, Flash)
Protocol independent implementation
Voice Voice
New media formats
HD Voice
Application control
Presence information
(2-way mobile text messaging (SMS), Message delivery reports, Short codes)
No web No web Webbrowser (HTML5) support
Chrome, Microsoft Edge, Firefox, Safari, Opera
audio/video calls from webbrowser
live chat from webbrowser
call setup from a webbrowser
real time call management in a browser
No IT integration
Limited IT integration Full scale integration
IT Integration (HTTP,E-mail,CRM)
Developers APIs (.Net,Java,HTML5,etc)
Databases (MSSQL,Oracle,MySQL,etc)
Proprietary hardware Proprietary hardware + software
Linux PC + software
Windows PC + software
Custom installation
Install on physical PC
Install on virtual PC
Cluster setup
Distributed system installation
Cloud installation
No notifications Led indication on phones Advanced notification system
E-mail notifications
SMS notifications
Text to speech phonecall notifications
Pop-up windows on pcs, smartphones and tablets
Basic rules
Instant ringing, delayed ringing
Prefered outside line
Static call routing
Incoming rules
Outgoing rules
Least cost routing
Direct dial in
Advanced call routing
Adaptive route selection
Message routing
Distributed ringgroups (remote/mobile extensions, desktop phones, PCs)
Availability based call routing
Call queues


  • Easy to install and manage via webbrowser based configuration interface
  • No need for separate phone wiring – phones use computer network. Desktop phones, mobile phones, and softphones can connect to the PBX over the LAN, WAN or the Internet.
  • Mobile phones can connect to the PBX and make phone calls using an Internet data connection
  • Supports two way mobile text messaging with delivery reports and short codes
  • Provides mobility by allowing employees to work from home using a remote extension
  • Any SIP compatible IP hardware phones or softphones can be used – no vendor lock in
  • Allows you to use your existing phone numbers, by connecting to your current telephone providers through VoIP Gateways or cards.
  • Allows you to use SIP trunks, VoIP providers or Skype Connect to save on your monthly telephone bill
  • Provides software developer APIs for the most common programming languages (, VB.NET,Java PHP, Perl, Python, Ruby, Javascript, HTML)
  • Offers IT integration for CRMs, ERPs and other IT systems
  • Can be connected to any ODBC compatible database server (Microsoft SQL, Oracle, MySQL, Sybase, Access, etc) to log and use information available, to authenticate users, to manage calls and to send and receive mobile messages