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手机号码列表
Internet
2 days ago
zakiya123
换机发送一个信号,该信号包含目标电话号码和拨号设备的标识信息。电话交换机根据接收到的号码信息,通过电话网络连接到目标电话号码所对应的终端设备,从而建立起通话连接。 在传统的电话网络中,电话交换机是通过交换电路来建立通话连接的。而在现代的数字电话网络和IP电
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