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由当初只是单一的固定电话到现在的卫星电话,移动电话,IP电话等等,以及由通信和计算机结合的,各种其他业务,第三代通信技术的即将上市,以及以后的第四代通信,随着通信技术的发展,人类社会已经逐渐步入信息化的社会。
From the original fixed-line phones to the present satellite phones, mobile phones, IP phones and the like, as well as the upcoming and future generations of communications by the computer and a variety of other businesses, the upcoming third generation communications technology With the development of communication technology, human society has gradually entered the information-oriented society.