telephone modem

例句：

1. 1.We need to install a telephone modem in our office to connect to the internet.
   我们需要在我们的办公室安装一个电话调制解调器来连接互联网。
2. 2. The modem is responsible for converting digital signals into analog signals for transmission over the phone line.
   调制解调器负责将数字信号转换为模拟信号，以便通过电话线传输。
3. 3.The modem card is a small device that plugs into your computer's USB port and allows you to connect to the internet.
   调制解调器卡是一个小设备，插入计算机的USB端口，允许你连接到互联网。