Submitted by johnh on June 17, 2007 - 18:31.
For people in the future who come looking...
The Sky installer will try to do the normal thing and set the box up with a dialing prefix of '142'. This is the 'anti-141'. Its purpose is to make sure your Sky box carries caller ID when it phones home.
Your Digiweb Metro phone line can carry this call, even though it's VoIP (they're using cable telephony protocols rather than regular SIP VoIP).
However, 142 doesn't work on Digiweb Metro. In fact you don't want a dialling prefix at all.
To set your box correctly, choose 'Services' on your remote and then key in '401 SELECT' to expose the technicians' menu. Dialling Preferences is option 3. Press the red button to reset all these options to the factory default of tone dialling with no prefix. Press Select to save this and make a call. If nothing happens, press Select a few more times until it starts dialling.
If the call is unsuccessful you'll get a full-screen error. If it works, you'll get dropped back to the main Installation menu. At this point you're done and can push 'Back Up' a few times. Et voila. You will now not be disconnected for not phoning home.