 In the fifth episode of the fourth season, Debbies cell phone rang  with a valid California phone number on the caller ID. Many fans  noticed this and called the number, Some callers heard a voice mail  message telling them that they called the 24 prop phone and to leave  a message. Others spoke with various people, including Production  Designer Joseph A. Hodges (qv) and stars Kim Raver (qv) (Audrey  Raines) and Carlos Bernard (qv) (Tony Almeida). Hodges later  stated in an interview that director Jon Cassar (qv) came up with  the idea for the "Fan Phone" because the two of them often got bored  scouting new shooting locations and wanted a chance to interact with  the audience. Hodges indicated they received around 80,000 calls on  the line in the first week.