digital telephone exchange

常见例句

双语例句

• Thus a base station of PHS is compatible with ISDN and is often connected directly to ISDN telephone exchange equipment e. g. a digital switch.
  因此，小灵通基站也可与综合业务网系统相匹配并且经常作为综合业务网电话的交换设备。譬如，电子交换机。
• Postal and telecommunications to achieve the program-controlled exchange, digital transmission will take the lead in the province completed the first telephone counties.
  邮电通讯实现了交换程控化，传输数字化，并率先在全省建成了第一个电话县。
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