Who knows how to use the BB machine?

The Bp machine only has the receiving function, but not the sending function. Receiving function is the same as SMS.

When you want to call someone, call the paging desk, and then someone will answer and ask what number you want to call.

If the bp machine is advanced and has Chinese display function, she will also ask you what message you want to leave (there is a word limit)

If there is no Chinese display function, the other party's bp machine only displays your phone number, which means that this number is calling him, and then he will run around the street looking for a public phone to call you back.