A user information generation unit generates user information containing charge arrears statuses from receipt arrears information. A specific user dealing unit extracts specific users from the user information on a delinquent period basis and issues dunning or function restrictions by mail to specific...http://www.google.fr/patents/US7099651?utm_source=gb-gplus-shareBrevet US7099651 - Cellular phone managing method, managing apparatus, record medium and cellular phone apparatus
Cellular phone managing method, managing apparatus, record medium and ...
