Useful words

caller (來電者), receiver (接聽者), etiquette/good manner (禮儀), wrong number (打錯), embarrassing (尷尬), abrupt (突然的�失儀的), informative (資料性的), directory (電話簿), concise (精簡), return your call (覆電話), to put somebody on hold (要對方等待), transfer the cal...