Joke Collection Website - Blessing messages - What does the "opposite number" mean in all the details of mobile query?

What does the "opposite number" mean in all the details of mobile query?

It's the person you call or text.

If you are the caller, the "caller number" is the person you want to call.

If you are called, the "opposite number" is the person who called you.

Similarly, you sent MO, and you received mt.