title: Can't hear peer's voice in a simple audio only WebRTC call with Node.js (WebSockets) and Javascript (WebRTC)
body: <p>I set up a pretty simple audio call test utilizing WebRTC based off of another one of my projects, a video chat (also using WebRTC). I thought it would be easy, but once I got it set up, the audio isn't played by the user. That means that both peers receive the respective offer/answer SDP WebSocket event, and the SDP is present, but I cannot hear my voice echo back at me when I talk or make any noise. Their is nothing in my console (I catch all errors, too).</p>
  <p>Is their a cause for this?</p>
  <p>I based my code off of Amir Sanni's video chat located <a href="https://github.com/amirsanni/Video-Call-App-NodeJS" rel="nofollow noreferrer">here</a>. I basically just used <code>getUserAudio</code> instead of media stream, and deleted the lines where it added a video.</p>