The phone was a wall phone - - not two buttons.

If there was just one enhanced version, this thread would be far different. But there were two enhancements done - - both came up with unique results. Kind of negates them both.

The original tape is the one that counts - - if the ramseys were talking, it will be on the tape - - it isn't like there was loud music playing or a lot of background noise - - it was 6 am and the house was quiet except for the Ramseys' voices.