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Emergency Services Network Interconnection


Document Number GR-3112
Issue Number 05
Issue Date Oct 2007
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    ABSTRACT: Issue 5 of GR-3112, Emergency Services Network Interconnection, replaces Issue 4.

    This document addresses the interconnection of client company Emergency Services Networks with originating VoP/NGN-based Competitive Local Exchange Carrier (CLEC) and Wireless Service Provider (WSP) network to support pre-Advanced Intelligent Network (AIN) and AIN-based E9-1-1 Service implementations. In addition, this document addresses interconnection of client company Emergency Services Networks with VoIP Service Provider networks in support of the i2 Solution defined by the VoIP Migratory Working Group (VMWG) of the National Emergency Number Association (NENA) VoIP Technical Committee. The i2 Solution supports the interconnection of VoIP domains with the existing Emergency Services Network infrastructure for the purpose of routing and delivering emergency calls originated in the IP domain to the appropriate Public Safety Answering Point (PSAP), based on the location from which the call was originated. This document also addresses the interconnection of VoIP customers and VSP networks with client company Emergency Services IP Networks (ESInets) in support of the i3 Solution being defined by the Long Term Definition Working Group (LTD WG) of the NENA VoIP Technical Committee. The i3 Solution assumes end-to-end IP signaling from the VoIP endpoint to an IP-capable PSAP.

    Specifically, this document focuses on the interconnection of client company Emergency Services Networks and ESInets with Session Initiated Protocol (SIP)-based originating networks.

    As customers migrate toward using VoIP-based service, it is critical that client company Emergency Services Network Providers continue to be able to route and process emergency call originations from these customers. This document focuses on procedures to support the interworking of traditional/existing client company Emergency Services Networks and client company ESInets with VoIP networks, for the purpose of processing emergency calls.

    This document is the only publicly available specification that provides a detailed description of the processes and interface protocols needed to allow VoP/NGN network providers and VoIP Service Providers to interconnect with the existing Emergency Services Network infrastructure and client company ESInets. This document is important to the industry because it provides a means by which VoP/NGN network providers and VSP Service Providers can meet customer demand for high quality emergency call processing.

    Issue 5:

    • Reflects the changes to the NENA i2 Solution resulting from the work activities of the NENA i2.5 WG.
    • Reflects changes to the NENA i3 Solution resulting from work activities of the NENA Long Term Definition (LTD) WG.
    When using GR-3112, you may want to refer to GR-394, GR-905, TR-NWT-001268, GR-1280, GR-1298, GR-1299, GR-1432, GR-2863. GR-2956, GR-3017, GR-3051, GR-3054, GR-3113, in addition to various standards publications.

    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-3112-CORE
    GR-3112-ILR

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