Ok here's the situation. I have an analog cordless phone (let's say x123). What I would like to be able to do is when a call comes in to another phone (x456) within the same pickup group the cordless x123 hits 1 3 to pick up the call. (That part works)If another call comes in for x789 (again same pickup group). I would like the cordless phone, x123, to put the first call on hold (by hitting flash), and hit 1 3 to pick up the 2nd call from the pickup group. Is this possible?