When I am talking on the phone?

Question

When i am talking on the phone after a phew seconds it sounds like somebody else picks up the other phone and just leaves it there for a minute then the sound comes again. What is that sound?

Answer 1

If you have digital cable phone there is a problem with your lines.

I had ComCast and my phone did that and finally I called them and they came out and fixed the lines and it stopped it.