A system and method for providing multimedia portal contents in a communication system. The method provides a ring-back tone to a calling terminal, the calling terminal sets first multimedia portal contents to be provided as the ring-back tone in consideration of given information of a calling terminal user. A called terminal sets second multimedia portal contents to provide as the ring-back tone in consideration of the given information of the calling terminal user, and the calling and called terminals transmit call connection setup related signals including set information. A first server receives the call connection setup-related signals and provides specific multimedia portal contents as the ring-back tone when the calling and called terminals set the multimedia portal contents, and provides the determined multimedia portal contents to the calling terminal.