scope:

Purpose of This Document

This document identifies potential technical service interconnection arrangements and dialing plans that could be used by providers of services using 555 line numbers.1 This document complements the existing 555 NXX Assignment Guidelines, ATIS-0300048. For each potential technical service interconnection arrangement, the elements required to provide services using 555 line numbers are described. The need for transferring end-user billing and dialing information to the designated carrier or the service provider is detailed to the extent possible for each potential technical service interconnection arrangement. Several basic national uniform technical service interconnection arrangements will allow both access providers and information providers to plan more effectively the ubiquitous deployment of services. Any such changes, including modifications or additions to the document, will be made under the direction of the NGIIF.

The technical service interconnection arrangements described in the document should be considered the product of industry consensus. The decision whether to implement any of these arrangements, and when any such arrangements may be deployed, is likely to be based on business opportunities and regulatory factors and may vary accordingly. Moreover, nothing in this document precludes the use of alternative arrangements which may include some or none of the features described.