OZEKI OZEKI VOIP SIP SDK
High performance VoIP SDK for .Net developers

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Quick start guide Get started on using Ozeki VoIP SDK

Example projects Check out our example projects

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Installation steps A step-by-step guide on installing the SDK

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Manual

Package contents Read about the SDK package contents

Data sheet Check out Ozeki VoIP SDK datasheet

On-line manual Read our on-line manual on VoIP technologies

Developers guide Read our developers guide on using the SDK

API reference book Ozeki VoIP SDK class library documentation

Softphone development Read about VoIP softphone development

PBX development Read about VoIP PBX development

Callcenter & CRM development Read about call center and CRM development

Webphone development Read about VoIP webphone development

Mobile development Read about Mobile VoIP app development
Tutorial

Course 1 How to develop a softphone in C#

Course 2 How to build a VoIP PBX in C#

Course 3 How to create an IVR system in C#
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Ozeki VOIP SIP SDK

< Basic softphone examples | Multiple phone calls >

Advanced Softphone Development

After elaborating softphone development basics you are ready to explore how to develop a softphone with more advanced features using the excellent background support of Ozeki VoIP SIP SDK.

The following pages contain more advanced programming technologies in relation with Ozeki VoIP SDK. The articles include all important information in order to make your development easier. Take advantage of this opportunity and dive in this pot of knowledge.

Manage simultaneous calls

This example explains how to manage multiple simultaneous calls to be able to contact several phone calls at the same time. Learn more...
SIP messages operations

Read more about how to handle, edit or even manipulate SIP messages in C# by using the ISIPMessageManupulator interface. Learn more...
Out of dialog SIP messages

Learn more about out of dialog SIP Instant Messages and find out how to send out them by using Ozeki VoIP SIP SDK. Learn more...
How to implement Autodialer

Take a look at this article to find out how to create an autodialer to be able to dial many phone numbers simultaneously. Learn more...
How to implement SIP SMS

It explains what are SIP and SMS messages and shows how to use the C# SIP softphone source to create a SIP SMS solution. Learn more...
How to create C# Callback Form

Find out how to create a Callback form by using the Ozeki C# VoIP SIP sofphone source. This guide describes its implementation. Learn more...

ASP.NET Softphone

On this page you can find a detailed description and source code that explains how to develop softphone in ASP.NET. Learn more...
C# WPF softphone

This tutorial demonstrates how to build a C# open source VoIP softphone with WPF GUI using Ozeki VoIP SIP SDK. Learn more...
Windows Forms Softphone

Get more information about creating Windows Forms softphone using C#. This article presents it step-by-step. Learn more...
VB.NET WinForms Softphone

Take a look at this guide if you are interested in developing Windows Forms softphone using Visual Basic .NET. Learn more...
Visual C++.NET Softphone

If you prefer Visual C++, check this example that demonstrates what you need to do for building a softphone in this language. Learn more...
Motion Detector

This article demonstrates how to create and configure easily a motion detector application which is able to highlight the moving object. Learn more...