Definitions for "Call waiting"
Keywords:  alert, beep, wait, notified, you're
This is a network feature when once activated can be switched on and off on most handsets. It allows a second call to come through when you are already on the phone. You have the choice of whether or not to accept the call.
A feature that allows the user to be notified by a tone if another call comes in while s/he is already on the phone.
a signal that another caller is trying your number
Changeable Faceplates Crosstalk
A service whereby a user engaged on a call is given an indication that another call is being made to that line. (Available on all digital exchanges.)
Allows a user to receive an additional call while already in a call.