Due to its outstanding flexibility, Ozeki VoIP SIP SDK also makes it possible
to add a VoIP PBX call assistant to your PBX system effectively. This article
explores the options provided by Ozeki SIP SDK for adding call assistant to PBXs.
Please be informed that PBX development support is available in Ozeki VoIP SIP SDK from version 10.0.
You can download the latest Ozeki SIP SDK version from the download
The following program code uses the background support of Ozeki VoIP SIP SDK,
therefore you will need to download and install Ozeki SIP SDK on your computer before
starting to use the program code. You will also need to have Visual Studio 2010
or compatible IDE and .NET Framework installed on your system, as the program code below is written in C# language.