PBX systems

This article is a brief introduction about PBX systems in relation with Ozeki VoIP SIP SDK. After reading through this page you will be fully familiar with all the essential terms concerning PBX and what you will need for creating your own solution using Ozeki VoIP SIP SDK.

Introduction

The Private Branch Exchange is a server application or a physical device that is used for phone line establishment between two VoIP clients using the SIP (Session Initiation Protocol). The PBX uses so-called SIP accounts for registering the SIP clients to the server and establishes communication lines between the SIP clients through standard SIP messages.

Figure 1 - VoIP PBX Systems

The software PBX is a special application that is used for sending, receiving, parsing and creating SIP messages. The SIP messages can be categorized according to the sender or the type of the messages. In one classification we can talk about Client and Server messages and in an orthogonal classification, there are INVITE and Non-INVITE messages. These two classifications can be combined, therefore we can distinguish 4 basic SIP message types.

The PBX System role is to work with the SIP messages, manage the client registration via SIP accounts, establish and terminate SIP communication lines. The PBX you will be able to build with Ozeki VoIP SIP SDK needs to be able to handle the SIP messages properly and have all the program support (codecs, protocols) for the SIP communication.

This article introduced you the basic knowledge about PBX systems and showed how Ozeki VoIP SIP SDK can help you to fulfill your wishes about this topic. If you have read through this page carefully, you already have all the knowledge you need to start on your own solution.

As you are now familiar with all the terms concerning this topic, now it is time to take a step further and explore what other extraordinary solution Ozeki VoIP SIP SDK can provide to you.

If you have any questions or need assistance, please contact us at info@voip-sip-sdk.com

You can select a suitable Ozeki VoIP SIP SDK license for your project on Pricing and licensing information page

Related Pages

• Setup Ozeki VoIP SIP SDK efficiently: Quick start guide
• Download Ozeki VoIP SIP SDK form the Ozeki VoIP SIP SDK download page
• You can find licensing information of Ozeki VoIP SIP SDK on Pricing and licensing information page