Kind of ironic that you can't get through to put your number on the do not call list! The web site isn't working either. I guess it may have been hard to predict how many people would want to be on the on-call list. I'd be guessing pretty much every one with a phone number though.
Here's an article from the CBC on the frustrations people are experiencing.
On a positive note I think it is great that this option now exists for us. Interruption based marketing is going the way of the dinosaur.
Feel free to register your number here. [UPDATE: It seems to be working now]