A Skype phone will just plug into a cable modem. But the Skype phone is also suppose to plug into the landline system so they are not a complete VOIP service.
Skype might be a business of selling phone numbers. A Skype number can be bought for about $60 a year and then add call forwarding to that. That's not even using the free web-based Skype system. Of course the same thing can be done with a pay-as-you-go mobile phone service and that's about $100 a year including call forwarding.
Of course the consumer can just use the free web-based Skype system. That doesn't require a number but just a Skype account with a user name
They do not need a Telco. if Nokia makes a dedicated phone that is wifi only. Just sell it outright as a one time purchase and the Skype fee to soft. There is some legal issues right now where a country says it should be classified as a Telco.
Like it did for all the previous owners? Or msft has some special sauce that will do this?
Speaking of numbers: What and where? Not only did you leave them out they are not universally known. So just saying to look at them is a bit like saying "Smell the ocean!". Only feasible if it is in your vicinity.