Answering Machine - Empty Room

If a telephone rings in an empty room and no one is there to answer it, was there really a phone call? Help me investigate this phenomenon by leaving your name and number after the tone.

Answering Machine - Confusion

Well I finally got an answering machine. Now how does this thing work? Hmmm. Press record button, I did that, and the light should be on. I wonder why it's not working right. Hmmmm, I wonder what this button does... *beep*

Answering Machine - Subtle Changes

This is John. I can't come to the phone right now, but if you leave a message at the tone, I'll return your call. (Now, re-record the message every morning. Frequent callers will notice that something sounds different, but will be confused since the words are exactly the same.)