good point and remember along with the phone interviewer there are probly others on ther phones on “mute” doing the thumbs up/down thing.
Pretend your phone is Bugged when they call.No opening beers,porn movies in the back ground etc.....
try to get yourself in a quiet room with NO distractions. Put a mirror on the wall and occasionally look up and look at you mouth.
Stay focused and take notes.
Best of luck!