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ATIS 0300073
- D Digit Report
- standard by Alliance for Telecommunication Industry Solutions, 01/01/2003
- Publisher: ATIS
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An underlying assumption in INC¿s work on the expansion of the NANP has been the release of the D digit coincident with NANP expansion. This is necessary to effect a transition in which both the existing and the expanded numbers can be dialed by using the historic D digit as a trigger. Release of the D digit would permit any digit value from 0-9 to be used in that position. The objective of this report is to identify and investigate the technical impacts of D digit release.