Never heard of that. Sounds impossible to me, like trying to set up a domain name for your website without using a registrar. Without going through the cartel, none of the other members will recognize your independant web site/phone number. If you call your custom unregistered phone number from a standard Verizon/AT&T/whatever phone, it won't get routed properly. Basically your phone numbers would only work on your own internal phone network.