This idea has been merged into another idea. To comment or vote on this idea, please visit ENTCOM-I-67 User Settings: Disable call waiting while on a call..
When a user is already on a call, and another call comes in, the phone continually rings over the original call.
This makes it difficult to hear the original caller.
I would propose that if a user is on a call and another comes in, RC makes a single ring tone to indicate another call is waiting, then just leave the pickup wizard on screen for the user to interact with.