公式タイトルと情報はIP Exchange PlusとPremiumのユーザーのみが利用可能です。
特許 権利維持 PROBLEM TO BE SOLVED: To provide a radio communication terminal device wherein new development of a new radio communication card is unnecessary, an existing network facility can be utilized with a simplified construction and with a low cost, and different kind radio network are automatically changeable without depending on a kind of a radio network.