This Technical Report (TR) provides further technical assessment of the potential approaches to Nationwide Number Portability (NNP) identified in the 2016 Technical Report on a Nationwide Number Portability Study (ATIS-1000071). This TR includes an analysis of these potential NNP solutions with the goal of providing additional information on the technical and systems-related impacts needed to support NNP. This TR does not modify or amend any of the technical characteristics in any of the approaches that had been detailed in ATIS-1000071. This TR will also identify any new standards or changes to existing standards/solutions that would be necessary to implement NNP, as well as implications for existing networks, in particular circuit-switched networks.
Technical Report on Assessment of Nationwide Number Portability (ATIS-1000083)