ng]: the channel name</p>
<p>Example:</p>
<pre><code>ORTC.addEventListener('onSubscribed', function(e) { 
    alert('Subscribed to channel: '+e.channel);
});
</code></pre>
<h4>onUnsubscribed</h4>
<p>Event fired when module unsubscribes from a channel.
The event parameter passed on the callback function has defined following property:
- <strong>channel</strong> [string]: the channel name</p>
<p>Example:</p>
<pre><code>ORTC.addEventListener('onUnsubscribed', function(e) { 
    alert('Unsubscribed from: '+e.ch