ITU-T International Numbering Resource Administration Series E: Overall Network Operation Telephone Service Service Operation and Human Factors International Operation - Numbering Plan of the International Telephone Service Study Group 2; 16 pp
This ITU-T Recommendation proposes the formation and functions/responsibilities of the
centralized ITU Numbering Administration Group (ITU-NAG) within TSB. It provides
recommended procedures to ensure that all requests for resources are handled in an im