A rental company system 100 comprises a branch master table 124 for unitarily registering and managing the content of inquiries made at each branch office. In response to an operation performed by a branch operator, a branch terminal 112 in each branch office displays a "reception registration and modification" screen 907 and receives input of a plurality of types of inquiry content information. The branch terminal 112 registers the inputted inquiry content information in the branch master table 124 via an internal network 110. In response to an operation performed by a branch operator, the branch terminal 112 displays an "inquiry content information transfer" screen 980 and transfers the inquiry content information inputted into the "reception registration and modification" screen 907 to a portable telephone 801 of a transmission receiving party inputted into the aforementioned screen 980.