Jhon69,
The number of phones you have should be fine, 4 is not many, I've seen people with about 10 or more and they wonder why some of thier phones dont ring correctly, or not at all.
The ID in the phones work though it's still a good idea.
??????
If the name worked all along in the actual phones but not on the reciever, I would have headed in a different direction.
However , you said it's all working now, so thats good
Jimbo