If this is the case at your office, you'll need to access an analogline before you can test the connection.
如果你的办公室也是这种情况，则需要在开始测试之前找条模拟线路。
2
The problems of providing the traditional credit-card service on the analogline are analyzed first in this paper.
分析了传统模拟线路的信用卡刷卡服务存在的问题，并提出了一个使用数字线路的方案及其实现技术。
3
Using the basic principle of analog parallel harmonics measurement and a special multi-layer feedforward neural network, a corresponding harmonics measurement on-line is built.