When I am on the line with someone and there is someone else trying to call me...I get a beep telling me there is another call so I take it by hitting flash...when I do it beeps twice and cuts off that caller...I was wondering if my config was not correct. Btw my ATA is behind the router (I know this isnt recommended but everthing is working like it should except this little problem). Also I placed my ATA in DMZ mode on my router. Thank You.