title: Restricting hangouts to be used through different organizations
body: <p>Helping a company that is using Google Apps to improve its security between different departments, They want to restrict using Google hangouts in Google apps across different organizations on the same domain.</p>
  
  <p>I tried easily at first to go through the Administrative settings and there was only disabling the hangouts in organizations. Same as written <a href="https://support.google.com/a/answer/60767?hl=en" rel="nofollow">here</a> </p>
  
  <p>Then I tried to go through the <a href="https://developers.google.com/+/hangouts/" rel="nofollow">Hangouts</a> APIs which had nothing to do with restrictions so I went through the <a href="https://developers.google.com/admin-sdk/admin-settings/" rel="nofollow">Admin Settings</a> APIs, Yet could not find anything helpful.</p>
  
  <p>My thoughts are either I can do such thing through some APIs - Right or wrong? - or somehow I can find some work around in building different hierarchy for the organizations.</p>
  
  <p>Straight forward question, How can I restrict chatting and video hangouts between people in different organizations on Google Apps?</p>