A system forwards a telephone call to a user. The cathode filament is grouped into at least one set of one or more filaments and filaments in each set are connected in series by fixing an end portion thereof on a terminal portion or an intermediate portion by ultrasonic wire bonding or ultrasonic bonding. According to the techniques presented herein, the messages from the individual stores may be aggregated, and the locations associated with the aggregated messages may be presented in a map, thereby presenting to the user the locations of the messages of the individuals irrespective of from which individual store each message was received.