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Ecrit Workgroup RFCs

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RFC5012 - Requirements for Emergency Context Resolution with Internet Technologies
This document defines terminology and enumerates requirements for the context resolution of emergency calls placed by the public using voice-over-IP (VoIP) and general Internet multimedia systems, where Internet protocols are used end to end. This memo provides information for the Internet community.
RFC5031 - A Uniform Resource Name (URN) for Emergency and Other Well-Known Services
The content of many communication services depends on the context, such as the user's location. We describe a 'service' URN that allows well-known context-dependent services that can be resolved in a distributed manner to be identified. Examples include emergency services, directory assistance, and call-before-you-dig hot lines. [STANDARDS-TRACK]
RFC5069 - Security Threats and Requirements for Emergency Call Marking and Mapping
This document reviews the security threats associated with the marking of signalling messages to indicate that they are related to an emergency, and with the process of mapping locations to Universal Resource Identifiers (URIs) that point to Public Safety Answering Points (PSAPs). This mapping occurs as part of the process of routing emergency calls through the IP network.
Based on the identified threats, this document establishes a set of security requirements for the mapping protocol and for the handling of emergency-marked calls. This memo provides information for the Internet community.
RFC5222 - LoST: A Location-to-Service Translation Protocol
This document describes an XML-based protocol for mapping service identifiers and geodetic or civic location information to service contact URIs. In particular, it can be used to determine the location-appropriate Public Safety Answering Point (PSAP) for emergency services. [STANDARDS-TRACK]
RFC5223 - Discovering Location-to-Service Translation (LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP)
The Location-to-Service Translation (LoST) Protocol describes an XML- based protocol for mapping service identifiers and geospatial or civic location information to service contact Uniform Resource Locators (URLs). LoST servers can be located anywhere, but a placement closer to the end host, e.g., in the access network, is desirable. In disaster situations with intermittent network connectivity, such a LoST server placement provides benefits regarding the resiliency of emergency service communication.
This document describes how a LoST client can discover a LoST server using the Dynamic Host Configuration Protocol (DHCP). [STANDARDS-TRACK]
RFC5582 - Location-to-URL Mapping Architecture and Framework
This document describes an architecture for a global, scalable, resilient, and administratively distributed system for mapping geographic location information to URLs, using the Location-to-Service Translation (LoST) protocol. The architecture generalizes well-known approaches found in hierarchical lookup systems such as DNS. This memo provides information for the Internet community.
RFC5964 - Specifying Holes in Location-to-Service Translation (LoST) Service Boundaries
This document describes how holes can be specified in geodetic service boundaries. One means of implementing a search solution in a service database, such as one might provide with a Location-to- Service Translation (LoST) server, is described. [STANDARDS-TRACK]
RFC6197 - Location-to-Service Translation (LoST) Service List Boundary Extension
Location-to-Service Translation (LoST) maps service identifiers and location information to service contact URIs. If a LoST client wants to discover available services for a particular location, it will perform a <listServicesByLocation> query to the LoST server. However, the LoST server, in its response, does not provide context information; that is, it does not provide any additional information about the geographical region within which the returned list of services is considered valid. Therefore, this document defines a Service List Boundary that returns a local context along with the list of services returned, in order to assist the client in not missing a change in available services when moving. This document defines an Experimental Protocol for the Internet community.
RFC6443 - Framework for Emergency Calling Using Internet Multimedia
The IETF has standardized various aspects of placing emergency calls. This document describes how all of those component parts are used to support emergency calls from citizens and visitors to authorities. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6444 - Location Hiding: Problem Statement and Requirements
The emergency services architecture developed in the IETF Emergency Context Resolution with Internet Technology (ECRIT) working group describes an architecture where location information is provided by access networks to endpoints or Voice over IP (VoIP) service providers in order to determine the correct dial string and information to route the call to a Public Safety Answering Point (PSAP). To determine the PSAP Uniform Resource Identifier (URI), the usage of the Location-to-Service Translation (LoST) protocol is envisioned.
This document provides a problem statement and lists requirements for situations where the Internet Access Provider (IAP) and/or the Internet Service Provider (ISP) are only willing to disclose limited or no location information. This document is not an Internet Standards Track specification; it is published for informational purposes.
RFC6739 - Synchronizing Service Boundaries and <mapping> Elements Based on the Location-to-Service Translation (LoST) Protocol
The Location-to-Service Translation (LoST) protocol is an XML-based protocol for mapping service identifiers and geodetic or civic location information to service URIs and service boundaries. In particular, it can be used to determine the location-appropriate Public Safety Answering Point (PSAP) for emergency services.
The <mapping> element in the LoST protocol specification encapsulates information about service boundaries and circumscribes the region within which all locations map to the same service Uniform Resource Identifier (URI) or set of URIs for a given service.
This document defines an XML protocol to exchange these mappings between two nodes. This mechanism is designed for the exchange of authoritative <mapping> elements between two entities. Exchanging cached <mapping> elements, i.e., non-authoritative elements, is possible but not envisioned. Even though the <mapping> element format is reused from the LoST specification, the mechanism in this document can be used without the LoST protocol. This document defines an Experimental Protocol for the Internet community.
RFC6881 - Best Current Practice for Communications Services in Support of Emergency Calling
The IETF and other standards organizations have efforts targeted at standardizing various aspects of placing emergency calls on IP networks. This memo describes best current practice on how devices, networks, and services using IETF protocols should use such standards to make emergency calls.
RFC7090 - Public Safety Answering Point (PSAP) Callback
After an emergency call is completed (terminated either prematurely by the emergency caller or normally by the call taker), the call taker may feel the need for further communication. For example, the call may have been dropped by accident without the call taker having sufficient information about the current state of an accident victim. A call taker may trigger a callback to the emergency caller using the contact information provided with the initial emergency call. This callback could, under certain circumstances, be treated like any other call and, as a consequence, it may get blocked by authorization policies or may get forwarded to an answering machine.
The IETF emergency services architecture specification already offers a solution approach for allowing Public Safety Answering Point (PSAP) callbacks to bypass authorization policies in order to reach the caller without unnecessary delays. Unfortunately, the specified mechanism only supports limited scenarios. This document discusses shortcomings of the current mechanisms and illustrates additional scenarios where better-than-normal call treatment behavior would be desirable. We describe a solution based on a new header field value for the SIP Priority header field, called "psap-callback", to mark PSAP callbacks.
RFC7163 - URN for Country-Specific Emergency Services
This document updates the registration guidance provided in Section 4.2 of RFC 5031, which allows the registration of service URNs with the 'sos' service type only for emergency services "that are offered widely and in different countries". This document updates those instructions to allow such registrations when, at the time of registration, those services are offered in only one country.
RFC7378 - Trustworthy Location
The trustworthiness of location information is critically important for some location-based applications, such as emergency calling or roadside assistance.
This document describes threats to conveying location, particularly for emergency calls, and describes techniques that improve the reliability and security of location information. It also provides guidelines for assessing the trustworthiness of location information.
RFC7406 - Extensions to the Emergency Services Architecture for Dealing With Unauthenticated and Unauthorized Devices
This document provides a problem statement, introduces terminology, and describes an extension for the base IETF emergency services architecture to address cases where an emergency caller is not authenticated, has no identifiable service provider, or has no remaining credit with which to pay for access to the network.