Did you know?

This SDK was used to build:

Ozeki Phone System XE - VoIP PBX Software for Developers Which is a high performance PBX system supporting Mobile and Desktop phones.


It was also used to create Ozeki 3D VoIP softphone. A cool SIP client that allows 3D Video calls.

 

OZEKI VOIP SIP SDK - Tutorial

Course 1:

How to develop a softphone in C#


Course 2:

How to build a
VoIP PBX in C#