What is Public Infrastructure ENUM?
National number administrators typically assign TNs to communications carriers, not to end users; carriers then assign the TNs to end users. Carriers have specific needs when it comes to provisioning routing information related to their customers TNs. Carriers map TNs to internal network addresses to enable call routing and features; these addresses are not publicly available. The carrier s network and its associated addresses are highly secure, and access is strictly maintained and limited to other service providers. These characteristics have come to define the recent discussions of carrier ENUM.
