The sky router is locked down harder than a.... well. you know i believe.
However, the standard Anytime stuff doesn't come via the phone line or via the router..
I haven't had either of my boxes (1x 1Tb and 1x Sky+HD) connected to the phone line for literally years.
Only since sky has opened up anytime+ to non Sky BB customers have i connected it.
The Sky Router is a 'Sky Sagem F@ST2504n'