After replacing the 2616 with a 3904 the calls will not rollover. The DIDs are 400, 700. 740, 741. Is this something to do with MARP. I put the MARP on the 3904 and only one call will come in. The other calls just ring endlessly. If I put the MARP back on the old phone the calls come in. Any help is a ppreciated!