title: Linphone for iPhone is not receiving calls when it goes to the background mode
body: <p>I have integrated the <code>linphone</code> sdk in my app.When my app goes to the background mode, my app is not getting any incoming calls. I want to make work my app as like <code>skype</code> when it goes to the background mode. </p>
  
  <p>I have added required background modes in info.plist.</p>
  
  <pre><code>  Application does not run in background  - NO
    Required background modes
      item 1        App provides Voice over IP services
  </code></pre>
  
  <p>I have implemented following method in <code>ApplicationDidEnterBackground</code> , still I'm facing same issue.</p>
  
  <pre><code>1.setKeepAliveTimeout:handler:
    [http://www.linphone.org/docs/liblinphone/group__IOS.html][1]
  </code></pre>
  
  <p>Please help me out. Thanks in advance.</p>