How to set supervisor for calls. <br>For example one of my agents is calling with one of my customers. <br>I want to listen their call so that no one understands i am listening to him/her. Or i want to call just with my agent so that customer doesn&#39;t understand that i am calling with him or her. Or i want to call just with the customer so that the agent doesn&#39;t understand that i am calling with it&#39;s customer!<br>

Can anybody help me?<br><div style id="__af745f8f43-e961-4b88-8424-80b67790c964__"></div>