In my case, I want all incoming calls to ring both phone systems
If one person is on phone 1, other incoming calls go to phone 2
also, you can answer any call, on phone 1 or phone 2
I configured my 202 to ring both phone jacks when any call comes in.
(the only possibly bad feature, is that you will hear the call waiting beep, in addition to the other Phone system ringing)
Phone 1 -- Phone Rings on Incoming Calls from: SP1,SP2,SP3,SP4,BT
Phone 2 -- Phone Rings on Incoming Calls from: SP1,SP2,SP3,SP4,BT