A server system includes a database having an identification number and a contact destination number as associated information; a storage device for containing the database; a call-accepting unit for accepting a call designating an advertised telephone number from a user's telephone as well as for extracting the identification number therefrom; a contact destination-extracting unit for extracting the contact destination number associated with the identification number from the database; and a connection-processing unit for connecting the call from a user's telephone to the telephone of an advertiser corresponding to the contact destination number according to the extracted contact destination number.