Each SBD-1 will actually handle three different channels, not just one. You can program each of the outputs to respond to whatever channel you desire.
Steve
ORIGINAL: TimBle
Yes, use the S-Bus decoder cables.
The serial bus address is assigned to the decoder and it talks to the servo directly.
Snag is you need one for every servo and they are not exactly cheap since they are effectively the brains behind any std servo.
Whats really great about the decoder cable is that you can use any other servo, analogue or digital!