I have a doorbell connected to a hub. When someone press the doorbell, the hub rings. The hub must be very close to the doorbell, otherwise the signal for the videophone is very week. Therefore I would like to connect another ringbell, the H100, further in the house, to be heard from the other rooms. I bought the H100 and connected. I try to connect the h100 to the D230S1 hub, but it doesn't. Like it is not possible to connect 2 hubs together?? I don't want to use the H100 as second hub, but just as a ringbell. Any ideas?