Where does the communication between God and Satan take place? In the book of Job, it is stated many times that Satan questioned (in His presence) the righteousness of God's servant Job and challenged Him to put Job to the test. Does this imply that Satan can withstand in the presence of God and can freely talk to Him at any time?
Luke 1:19 implies that angels are fully capable of being in the presence of God.  


  The angel said to him, "I am Gabriel. I stand in the presence of God,
  and I have been sent to speak to you and to tell you this good news.


Satan, as an angel, would thus be able to commune with God in such a fashion.