November 1985 | NTIA Technical Report TR-85-182
ISDN: Numbering, Addressing, and Interworking
Val J. Pietrasiewicz; J. Jay Austin; Robert F. Linfield
Abstract: The factors that affect the design of a numbering plan for the Integrated Services Digital Network (ISDN) involved a complex interplay between existing plans, national priorities, and technical system limitations. These factors are the subject of this report. Desirable attributes of any numbering plan are explained, existing standards covering various plans are discussed and some actual plans currently in use are examined. The development of the Numbering plan for ISDN by the Consultative Committee for International Telegraph and Telephone is essentially complete. However there is still a need to understand and make sense of the relationship of all of the standardized plans and the implications on interworking as public networks evolve toward the ISDN concept and technology.
Keywords: ISDN; addressing; interworking; numbering plans; telephony
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