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Webphone Development

How to create text/audio/video chat program using Ozeki MediaGateway SIP SDK

download Download: chat-example.zip

This page provides information on how to create text/audio/video chat program among more Silverlight client applications using Ozeki VoIP SIP SDK. Beside this brief introduction please also check the configuration steps and the source code explanation.

Click here to check the source code >>>>

Ozeki Silverlight VideoChat sample program demonstrates how to build a text/audio/video chat program using Ozeki VoIP SIP SDK among more Silverlight client applications. The SL clients connect to a server that records the logged in users, and forwards media data arriving from the clients to the appropriate client. After logging into the VideoChat server, the Silverlight client can optionally make and receive audio and video calls, or text messages from the logged in clients.

Requirements for the sample program

Supported operating systems:

  • Microsoft Windows XP
  • Microsoft Windows Server 2003
  • Microsoft Windows Server 2008
  • Microsoft Windows Vista
  • Microsoft Windows 7
  • Microsoft Windows 8
  • Microsoft Windows 10
  • Microsoft Windows 11

Required development environment:

  • Microsoft Visual Studio 2010
  • Microsoft .Net Framework 3.5 or 4.0
  • Microsoft Silverlight 4 Tools for Visual Studio 2010

  • Internet connection

Hardware requirements:

  • 1 GHz or faster processor
  • 1 GB RAM (32-bit) +

Getting started...

For more information and details please also check the following web pages:

  • Configuration steps
    This page gives you a brief introduction to the configuration steps that help use the sample program instantly.

  • Source code explanation
    To get learn the source code of this sample program in details check the source code explanation page for clarification. On this page you will find the source code with comments in a transparent way.


This sample program is a demonstration on how to connect to a server that is supported by Ozeki MediaGateway SDK from Silverlight applications easily and quickly. It is based on Ozeki VoIP SIP SDK that is a true .Net solution. No professional computer skills are required and the implementation process is really easy. With the included test component time, energy and money can be saved.

Licensing information

When you decide to purchase Ozeki VoIP SIP SDK license you may be interested in licensing policy.

A purchased Ozeki VoIP SIP SDK "license" can be used to build a "single product". This "single product" (along with its subsequent versions) can be freely distributed in as many copies as you wish without paying any royalties or license fees to Ozeki.

To check the available Ozeki VoIP SIP SDK licenses or to place an order go to Pricing and licensing information page!

For more information please do not hesitate to contact us at: info@voip-sip-sdk.com!

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Configuration steps

Source code explanation page

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