title: VOIP in C#, asp.net or Java
body: <p>Could you people please give some good resource / ideas of implementing VOIP in c#.net, Asp.net or Java.</p>
  
  <p>Why I am specifying 2 different language platforms is we are yet to take up a call. </p>
  
  <p>Basically we don't have the idea henceforth the concept is more important to us.</p>
  
  <p>We are going to make a White board application and one of the client requirement is </p>
  
  <blockquote>
    <p>White board should have VOIP
    conferencing, chat image sharing and
    ability to upload .pdf files</p>
  </blockquote>