title: Connecting a SIP app to RingCentral server
body: <p>I'm attempting to connect a SIP iOS app to a digital SIP line hosted by RingCentral. The settings for the line, as given by RingCentral, are: </p>
  
  <pre><code>SIP Domain: sip.ringcentral.com:5060
  Outbound proxy: sip11.ringcentral.com:5090
  Username: 12148656048
  Password: -password-
  Authorization ID: -same as password-
  </code></pre>
  
  <p>So, I've set up the SIP app like this: </p>
  
  <pre><code>-Identity Settings-
  
  Display name: Line1
  Public id: sip:12148656048@sip.ringcentral.com
  Private id: 12148656048
  Password: -password-
  Realm: sip.ringcentral.com
  
  -Network settings-
  
  Proxy Host: sip11.ringcentral.com
  Proxy Port: 5090
  Transport: UDP
  Enable SigComp: OFF
  
  -NAT Traversal settings-
  
  Enable STUN: OFF
  Discover: OFF
  Server: numb.viagenie.ca
  Port: 3478
  </code></pre>
  
  <p>My app fails to connect to the server. Can anybody spot the error there? FYI the app i'm using is <a href="https://github.com/DoubangoTelecom/idoubs" rel="nofollow noreferrer" title="iDoubs">iDoubs</a>, and I've been able to connect this to multiple SIP servers such as <code>sip2sip.info</code> and <code>voipraider.com</code>. Any help would be really appreciated.</p>
  
  <p>EDIT: Here is a post on their board which talks about setting up a similar app on Android - <a href="http://forum.ringcentral.com/viewtopic.php?p=6568&amp;sid=8f34998c8092b25f8e3944c11a92e131" rel="nofollow noreferrer">LINK</a>. I've posted this question on their board as well but have yet to get a reply. </p>