VoIP SIP SDK
High performance VoIP SDK for .Net developers
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If you wish to get further information, do not hesitate to contact us!

E-mail:  info[at]voip-sip-sdk.com

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Callcenter developers
If you are working on telephone solutions, please check out the Ozeki VoIP SIP SDK.
It can be used to create:

Webphone solutions:
- Adobe Flash video phone
- Silverlight video phone
- Web to web calls
- Web to VoIP calls

Custom SIP clients:
- Silverlight SIP VoIP client
- Flash SIP VoIP client
- C# .net SIP VoIP client
- ASP .net SIP VoIP client
- Web based SIP VoIP client

Custom VoIP solutions:
- VoIP SIP softphones
- VoIP call center clients
- VoIP IVR systems
- VoIP predictive dialer systems
- VoIP auto dialer systems
- VoIP call assistant
- VoIP call recording systems
- VoIP intercom solutions

Ozeki VoIP Training

Ozeki VoIP Training is a free IT course for anybody who want to get the essential knowledge about Voice over IP communication and VoIP programming. The course lessons are built up sequentially to guarantee the continuous improvement for the reader and to be easy to follow and understand.

The topics of the training are carefully selected by professionals who make sure that the materials give usable and practical knowledge that is valuable for both beginner and advanced programmers.

Every lesson contains all the new terms and definitions for the solutions discussed in the material. If a term is not present in a material, it is surely defined in an earlier lesson. As all the previous lessons are always available for anyone to download, you can start the training or check the previous lessons any time you want.

There are Knowledge Check Questions at the end of all course material that make easier to check if you have understood and memorised all the necessary knowledge. If you can not answer the questions, you can check the correct answers at the very end of the material and you can also read through the related sections again.

The course materials are built up to contain the basic programming knowledge for making VoIP programs and they also contain some advanced tips and tricks that professionals will also find useful. All the source codes explained in the training lessons are based on the Ozeki VoIP SIP SDK and are free to use and modify according to your needs.

If you follow the course materials carefully and try the source codes discussed in each lessons, you will be fully familiar with the VoIP solutions that can be created by using Ozeki VoIP SIP SDK.

If you are interested in VoIP programming, start learning now with the free course materials Ozeki VoIP Training provides. If you have any questions or suggestions about the training or Ozeki products feel free to contact us at info[at]voip-sip-sdk.com.

Lesson 1 - Introduction to VoIP Technology

2012.01.06.

This first lesson of Ozeki VoIP Training contains the basic knowledge about the terms and processes concerning the Voice over IP technology. The main goal of this lesson is to make the reader be familiar with the essential knowledge about VoIP before starting to write VoIP communication programs.

Download Documents for the Lesson:

Name:Course material
Download:Ozeki-VoIP-Training-Lesson1.pdf (2.5 KB)

Lesson 2 - How to start creating a VoIP solution with Ozeki VoIP SIP SDK

2012.01.12.

The second lesson of Ozeki VoIP Training will show you all the basic steps of starting VoIP application programming with Ozeki VoIP SIP SDK. You will find all the necessary information about the tools and requirements related to the topic. This material also contains a detailed guide for starting a Visual Studio Project and for registering Ozeki VoIP SIP SDK to the project, that needs to be done in case of every VoIP application.

Download Documents for the Lesson:

Name:Course material
Download:Ozeki-VoIP-Training-Lesson2.pdf (9.5 KB)

Lesson 3 - A Step by Step Guide for Building an Ozeki VoIP SIP Softphone

2012.01.20.

The third lesson of Ozeki VoIP Training is a detailed step by step guide that will show you everything you need to implement for an accurately working softphone for making voice calls. You will learn about all the necessary methods and settings that need to be done in the right order.

Download Documents for the Lesson:

Name:Course material
Download:Ozeki-VoIP-Training-Lesson3.pdf (5 KB)
Name:Softphone Example Program
Download:20_MyFirstSoftphone.zip

Lesson 4 - A Step by Step Guide for Building an Ozeki VoIP SIP Softphone

2012.01.31.

In this lesson of Ozeki VoIP Training you can learn how to extend your existing softphone application with additional audio functions and how you can implement a simple answering machine.

Download Documents for the Lesson:

Name:Course material
Download:Ozeki-VoIP-Training-Lesson4.pdf (5.5 KB)
Name:Answering Machine Example Program
Download:19_MyFirstAnsweringMachine.zip
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