Power system communication automatic exchange system is one of the largest dedicated phonetic communication network in China, which plays a tremendous role.

电力系统自动交换网作为国内最大的专用语音通信网之一，发挥着巨大的作用。

youdao

For the first time, this new system will give our Nation's police officers and first responders a dedicated communication network in times of crisis helping fulfill our promise to provide these brave men and women with tools worthy of the sacrifices they make on our behalf.

WHITEHOUSE: The White House