The present invention relates to a mobile terminal and a terminal communication system, and more particularly to, a mobile terminal, which allows multimedia contents service for waiting for call connection to be provided in a terminal communication system, and a multimedia contents service providing system and method for call connection waiting using the same. The mobile terminal comprises: a wireless communication unit which receives multimedia contents from a multimedia contents providing server during a call connection waiting time to process the same upon originating a call; an audio processing unit which outputs audio signals of the multimedia contents received through the wireless communication unit; a control unit which controls the multimedia contents set according to time intervals so as to be outputted during the call connection waiting time; and a display unit which displays the multimedia contents.