Listen in on a live call in Twilio
<p>I am trying to create an interactive dashboard that will display active Twilio calls with the ability to listen in on any call in progress.</p>

<p>The documentation seems to point me at Conferences, but I don't want to have to initiate every call in my organization as a conference, and would rather covert the call if possible. This also has to be seamless - the parties to a call should not experience any delays or pauses just because someone is listening in.</p>

<p>What are my options?</p>