It will also strip out any DC components (e.g. ringing signals or line power).

If the call is not dropped quickly enough it may result in a short ringing signal.

When I phoned, the ringing signal came back many times, but nobody answered.

When a party initiates a call to this line, the exchange sends the ringing signal.

The paired chimes of the ringing signal rattled silent.

There was a click, then a ringing signal.

In ground start signaling, the central office initiates a call by grounding Tip and putting the ringing signal on the line.

Through her gold-and-ivory headset she hears the clatter of relays, and then the ringing signal.

During intercom use, an external call's ringing signal can be heard in the earpiece.

When those lines reached capacity, a caller would get only a continuous ringing signal.