This document describes North American emergency call handling procedures in an IMS-based origination network (including steps taken by the originating device and network elements) and routing of such calls to a terminating ESInet or to a legacy Selective Router. This document also describes the interface between the IMS originating network and the ESInet, and between the IMS originating network and a legacy Selective Router.
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ATIS Standard for Implementation of 3GPP Common IMS Emergency Procedures for IMS Origination and ESInet/Legacy Selective Router Termination
The Alliance for Telecommunications Industry Solutions , 03/01/2014
Pages: 114
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