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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Air-ground radiotelephone service ： ウィキペディア英語版 Air-ground radiotelephone service Air-ground radiotelephone service is a method of telephone communications used by aircraft pilots and passengers of commercial airline jets flying over the United States. The air-ground radiotelephone service operates on frequencies designated by the Federal Communications Commission. ==Design== A U.S. air-ground radiotelephone transmits a radio signal in the 849 to 851 megahertz range; this signal is sent to either a receiving ground station or a communications satellite depending on the design of the particular system. If it is a call from a commercial airline passenger radiotelephone, the call is then forwarded to a verification center to process credit card or calling card information. The verification center will then route the call to the public switched telephone network, which completes the call. For the return signal, ground stations and satellites use a radio signal in the 894 to 896 megahertz range. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air-ground radiotelephone service」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.