Hi, I'm in Norway and purchased two products of yours. CD 1551B/21 and CD 1502B/21. It stated on the box that these phones were expandable to 4 handsets. The sales person told me that I should be able to synchronize these three phones together so as to run off one phone line. My intention is to hook the one with the answering machine to the phone line and run the other two remotely from the same base. The Norwegian manual does not seem to explain the process, I'd prefer the instructions in English, anyway. Can you help, please? Thanks Gary Constable gconstable@earthlink.net