Emergency Services Network Interconnection
Document Number GR-3112
Issue Number 05
Issue Date Oct 2007
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.
- 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
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:
Table of Contents:
View Table of Contents
We can accept credit cards, Wire Transfers, or Purchase Orders. For PDF, EMAIL, or DOWNLOAD media, you must complete your purchase online by credit card, or by calling Customer Service. If you have additional payment questions or we can assist in any way, please contact Customer Service. You can also go to our Ordering/Payment FAQs page for further information. See our Return Policy for details on returns.