An apparatus in one example has: a public switched telephone network; an Internet Protocol network; migration portal operatively coupled to the Internet Protocol network and to the public switched telephone network; and the migration portal having an information converter, the information converter having inputs for receiving public switched telephone number related information that is utilized in the public switched telephone network, and having outputs for providing Voice Over Internet Protocol telephone number related information that is utilized in the Internet Protocol network, the Voice Over Internet Protocol telephone number related information being a function of a predetermined subset of the public switched telephone number related information.