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Location Validation Database (VDB) Generic Requirements in Support of E9-1-1 Service


Document Number GR-3130
Issue Number 02
Issue Date Nov 2007
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    ABSTRACT: Issue 2 of GR-3130, Location Validation Database (VDB) Generic Requirements in Support of E9-1-1 Service, replaces Issue 1.

    The National Emergency Number Association (NENA) is in the process of defining a suite of solutions to enable emergency calls originated by Voice over Internet Protocol (VoIP) users to be routed to the appropriate Public Safety Answering Point (PSAP) for the geographic location from which the call was originated. The Long-Term Definition Working Group (LTD WG) of NENA is defining an architecture for an end-to-end Internet Protocol (IP) solution, referred to as an i3 Solution. The VoIP Migratory Working Group (VMWG) of NENA has defined a near-term solution that provides for migration toward the long-term view, while making use of the existing conventional E9-1-1 System Service Provider infrastructure. This is referred to as the i2 Solution. A revised version, referred to during its development stage as i2.5, is nearing completion for expected publication by early 2008. This GR reflects the revised i2 Solution.

    The i2 Solution defined by the NENA VMWG includes a number of new functional elements to enable the pre-validation of location information, as well as the routing of VoIP-originated emergency calls and the delivery of the associated call and location-related information to the PSAP. These new elements and the associated terminology are described this document. The critical network element that supports validating the location information that will be used subsequently to route a VoIP emergency call is called the Validation Database (VDB).

    This document provides generic requirements for the functions and interfaces that must be supported by a VDB as a key element of the NENA i2 Solution. Many of the functions of the VDB described in this GR are expected to be extensible for support of location validation in the i3 Solution also.

    This GR addresses the requirements on the VDB to process and respond to location validation requests received from any of the following three different types of entities:

    • Location Information Server (LIS)
    • VoIP Service Provider (VSP)
    • End user application.
    This document has been reissued to align with current NENA documents. Changes have been made to:
    • Clarify entities that perform address validation
    • Describe use of the Emergency Routing Tuple (ERT) and provide more detail for Root Discovery consistent with the changes planned for Issue 2 of NENA 08-001, Interim VoIP Architecture for Enhanced 9-1-1 Services (i2)
    • Alignment with NENA 02-013, NENA Data Standards for the Provisioning and Maintenance of MSAG Files to VDBs and ERDBs, regarding use of MSAG data to populate the VDB database.
    When using GR-3130-CORE, you may want to refer to GR-350, GR-815, GR-3112, GR-3113, GR-3118, GR-3119, GR-3120, GR-3129, and GR-3158, as well as various standards documents.

    This GR also includes one or more Issue List Reports (ILRs) that detail open or closed technical issues in the main document. The ILR(s) are automatically sent free of charge to the GR document purchaser.

    Components of this product are:
    GR-3130-ILR
    GR-3130-CORE

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