In this case you will need to configure the Call Progress Tones for your country.

在这种情况下，你会为你的国家需要配置的呼叫进程音。

youdao

Many analog devices are pre-configured for use in the USA, and do not understand the call progress tones of your country.

许多模拟设备的预配置用于在美国，不明白你的国家的呼叫进程音。

youdao

Many analog devices are pre-configured for use in the USA, and do not understand the call progress tones of your country.

许多模拟设备的预配置用于在美国，不明白你的国家的呼叫进程音。

youdao