The best feature of the IPS 416 is its Auto Attendant. The auto attendant answers after the second ring and plays this message to the caller: "If you are a telemarketer hang up now, otherwise press zero to reach Dan and Sally". We have only received 1 telemarketer call since the summer of 1997!
The phones don't ring until the caller presses 0. So, all we hear is the caller id announcement, made by ACE. If we are in bed, or have the speakers muted, we don't hear anything.
Go to the BBS Telecom web site for full details.