With switches upgrading, technology is constantly increasing, the trend for more control of program - controlled switches few fonts.
随着交换机的更新换代，技术的不断提高，交换机的发展趋势为更加数字型的程控交换机。
The products are widely used of electric and data communication for such Program-controlled switches, Base Station System.
公司产品被广泛用于信号传输、程控交换机、基站系统。
The products are widely used of electric and data communication for such Program-controlled switches, Base Station System.
公司产品被广泛用于信号传输、程控交换机、基站系统。
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