The air defense communication systems is a important means to guarantee the quality of the air defense command and control, its evaluation will affect the battle result directly.

防空通信系统是保障防空指挥和控制有效性的重要手段，其效能的好坏将直接影响到作战结果。

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Over-the-air technology which download the data of EMS memory and SIM card in mobile station through the air interface of mobile communication present a solution to these challenges.

空中下载技术是一种通过移动通信的空中接口对移动终端内存及SIM卡数据进行远程管理的技术。

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ConnecTV instant "TalkBack" social polls mirroring those on the air to increase communication with local audiences.

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The Americans are trying to use e-mail for routine ground-to-air communication, freeing voice channels and lightening the load for controllers.

ECONOMIST: A jam at 32,000 feet

Another area that continues to be robust are the wireless communication companies, exemplified by Air Touch Communications.

CNN: WATCHING WALL STREET