在成熟的AMPS市场上引入数字传输技术的关键在于正确地估计数字技术市场规模和增长速度,据此引入适当的产品和业务。正确地审时度势可以减少因超前或滞后而带来的风险,减少损失。 与其它国家相比,美国已建立起性能可靠、价格合理的模拟AMPS网络。然而,美国数字网的发展却滞后于许多国 The key to introducing digital transmission technology in the mature AMPS market is the correct estimation of the size and growth of the digital technology market, by which appropriate products and services are introduced. Correctly assessing the situation can reduce the risk caused by lead or lag, and reduce losses. Compared with other countries, the United States has established a reliable and affordable analog AMPS network. However, the development of the U.S. digital network has lagged behind that of many other countries