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    ITU-T work programme

    [2025-2028] : [SG2] : [Q2/2]

    Work item: E.164 Supplement 2
    Subject/title: Number Portability
    Status: Under study [Issued from previous study period]
    Approval process: Agreement
    Type of work item: Supplement
    Version: Rev.
    Equivalent number: -
    Timing: Not specified (High priority)
    Liaison: -
    Supporting members: -
    Summary: Supplement 2 to Recommendation ITU-T E.164 defines standard terminology for a common understanding of the different aspects of number portability within an ITU-T E.164 numbering scheme. It identifies numbering and addressing formats, call flows, network architectures and routing approaches that will provide alternative methods of implementation. It also proposes some examples of the administrative and operational processes required for the successful implementation of number portability.
    Comment: -
    Reference(s):
    Historic references:
    Contact(s):
    Mariko HONDA, Editor
    First registration in the WP: 2020年06月10日 16:33:42
    Last update: 2025年02月19日 14:38:31

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