If you spend more than three hours a day in front of a computer or electronic terminal you probably have some level of what physicians are calling "Computer Vision Syndrome."

假如你一天花三个小时以上的时间看电脑或电子设备终端，你就很可能有医生们所说的“电脑视觉综合症”。

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The invention can search out usable transponder or calling terminal in current system quickly, and further synchronize the transponder or calling terminal.

本发明能够快速搜索到当前系统中可用的转发器或者主叫终端， 进一步向所述转发器或主叫终端进行同步。

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Through the invention, the called terminal is not disturbed by calling, and the calling terminal can learn the condition that the called terminal refuses the calling.

通过本发明，使得被叫终端可以不受呼叫打扰，并且主叫终端也能够知晓被叫终端拒接呼叫的情况。

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