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Created: September 08, 2005.
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OASIS Advances CAP and Emergency Data Exchange Language (EDXL) Specifications.

Contents

Two specifications being developed by the OASIS Emergency Management Technical Committee have advanced toward standardization, while work commences on a third XML-related standard for messaging.

Under its current charter, the Emergency Management TC focuses on the creation of incident and emergency-related standards for data interoperability. While the EM TC progresses the Common Alerting Protocol (CAP) specification toward a version 2.0, its Members are also working with other organizations to develop the first components of the Emergency Data Exchange Language (EDXL). The EDXL standards activity is coordinated with DHS/FEMA (as part of the Disaster Management eGov Initiative) and with the Emergency Interoperability Consortium (EIC); hosting services are provided by the Comcare Alliance.

The Common Alerting Protocol (CAP) v1.1 specification has been submitted by the Emergency Management TC to OASIS for consideration as an OASIS Standard. CAP functions both as a standalone protocol and as a payload for EDXL messages. It supports information exchange in order to advance incident preparedness and response to emergency situations. CAP Version 1.0 was successfully standardized in March of 2004. Voting on the CAP version 1.1 specification for (possible) approval as an OASIS Standard begins September 16, 2005.

Several OASIS member companies have certified that they are using CAP 1.1, including Warning Systems, Inc., Innovative Emergency Management, Inc., Anteon Corporation, Logic Innovations Inc., and OpenGIS Consortium. A CAP Wiki page reports that at least twenty-six (26) agencies are now using the CAP standard.

The Common Alerting Protocol (CAP) is a "simple but general format for exchanging all-hazard emergency alerts and public warnings over all kinds of networks. CAP allows a consistent warning message to be disseminated simultaneously over many different warning systems, thus increasing warning effectiveness while simplifying the warning task. CAP also facilitates the detection of emerging patterns in local warnings of various kinds, such as might indicate an undetected hazard or hostile act."

According to a "Roadmap to Emergency Data Standards" Wiki document prepared by CAP v1.1 co-editor Art Botterell, CAP "was designed during 2001 and 2001 by an international ad-hoc Working Group of emergency managers and technology experts, based on a study on Effective Disaster Warnings published in late 2000 by the National Science and Technology Council's Subcommitee on Disaster Reduction. After a number of field trials and demonstrations in various parts of the U.S., CAP was adopted as an international standard by OASIS."

The Common Alerting Protocol (CAP) "standardizes the content of alerts and notifications across all hazards, including law enforcement and public safety as well as natural hazards such as severe weather, fires, earthquakes, and tsunami. Systems using CAP have shown that a single authoritative and secure alert message can quickly launch Internet messages, news feeds, television text captions, highway sign messages, and synthesized voice over automated telephone calls or radio broadcasts."

The OASIS Emergency Management TC has also released a Public Review Draft for the Emergency Data Exchange Language (EDXL) Distribution Element v1.0 specification. EDXL is a broad initiative to create an integrated framework for a wide range of emergency data exchange standards to support operations, logistics, planning and finance. The OASIS EM TC participates in the design of format specifications (e.g., XML Schemas) based upon technical requirements provided by DHS and EIC. The primary goal of the EDXL project is to "facilitate emergency information sharing and data exchange across the local, state, tribal, national and non-governmental organizations of different professions that provide emergency response and management services. EDXL will accomplish this goal by focusing on the standardization of specific messages (messaging interfaces) to facilitate emergency communication and coordination particularly when more than one profession is involved."

The EDXL Distribution Element (DE) specification "describes a standard message distribution framework for data sharing among emergency information systems using the XML-based EDXL suite of specifications. This format may be used over any data transmission system, including but not limited to the SOAP HTTP binding. The primary purpose of the Distribution Element is to facilitate the routing of any properly formatted XML emergency message to recipients. DE may be thought of as a container, providing the information to route payload message sets such as Alerts or Resource Messages by including key routing information such as distribution type, geography, incident, and sender/recipient IDs."

Sixty-day public review of the Emergency Data Exchange Language (EDXL) Distribution Element v1.0 specification extends from 29-August-2005 through 28-October-2005. "Public review from potential users, developers and stakeholders is an important part of the OASIS process to assure interoperability and quality."

The OASIS Emergency Management TC is now in the process of reviewing a proposed (initial) set of fourteen resource messages for standardization. The materials have been submitted "for standards review and formalization" by the Department of Homeland Security's Disaster Management e-Gov Initiative and its Standards Working Group. The initial proposed EDXL Resource Message Set includes: Request Resource; Response to Request Resource; Order Resource; Dispatch Resource; Request for Resource Information (RFI); Response to Request for Resource Information (RFI); Unsolicited Resource Offer; Release Resource; Request to Return Resource; Response to Request Return Resource; Request Resource Quote; Response to Request Resource Quote; Request for Resource Status; Resource Request Status.

According to the draft Emergency Data Exchange Language (EDXL) Standard Format for Resource Messaging submitted by EDXL Project Team, resource messages "focus on finding, requesting and getting resources to the incident, demobilization and return from the incident, and tracking resource time-line of all types of resources (human resources, vehicles, equipment, supplies, and facilities, as well as packages and teams composed of many of these). Resource messaging also advises others of status and who is requesting what, but does not address processes at/within the actual incident (i.e., At-Incident Management). Resource Messaging applies to everyday events (non-incidents) and incident preparedness (e.g., planning activities, where no current incident exists or has not been identified)."

The OASIS Emergency Management TC received an invitation from the EIC and DHS/DM to demonstrate CAP during Preparedness Month in Washington. This timely demonstration on September 28, 2005 was scheduled as part of National Preparedness Month, intended to focus on three major government users of CAP Version 1.0: National Oceanic and Atmospheric Administration (NOAA), United States Geological Survey (USGS), and CAPWIN (Capital Wireless Integrated Network).

Bibliographic Information

  • Common Alerting Protocol, Version 1.1. OASIS Committee Specification. 11-August-2005. Edited by Elysa Jones (Warning Systems, Inc) and Art Botterell (Individual Member). Document Identifier: 'CAP-V1.1'. 35 pages. Location: http://docs.oasis-open.org/emergency/CAP/V1.1/. Produced by members of the OASIS Emergency Management Technical Committee.

    Abstract: The Common Alerting Protocol (CAP) is a simple but general format for exchanging all-hazard emergency alerts and public warnings over all kinds of networks. CAP allows a consistent warning message to be disseminated simultaneously over many different warning systems, thus increasing warning effectiveness while simplifying the warning task. CAP also facilitates the detection of emerging patterns in local warnings of various kinds, such as might indicate an undetected hazard or hostile act. And CAP provides a template for effective warning messages based on best practices identified in academic research and real-world experience..."

  • Emergency Data Exchange Language (EDXL) Distribution Element, v. 1.0. Edited by Michelle Raymond (Honeywell ACS Labs) and Sylvia Webb (Individual Member). OASIS Committee Draft. August 19, 2005. Document Identifier: 'EDXL-DE-V1.0'. This Version: http://docs.oasis-open.org/emergency/EDXL-DE/V1.0. Produced by members of the OASIS Emergency Management Technical Committee. TC Chair: Elysa Jones (Warning Systems, Inc).

    "This Distribution Element specification describes a standard message distribution framework for data sharing among emergency information systems using the XML-based Emergency Data Exchange Language (EDXL). This format may be used over any data transmission system, including but not limited to the SOAP HTTP binding. The primary purpose of the Distribution Element is to facilitate the routing of any properly formatted XML emergency message to recipients. The Distribution Element may be thought of as a 'container'. It provides the information to route 'payload' message sets (such as Alerts or Resource Messages), by including key routing information such as distribution type, geography, incident, and sender/recipient IDs..."

  • Emergency Data Exchange Language (EDXL) Standard Format for Resource Messaging. Supporting the Disaster Management e-Gov Initiative. Prepared by The EDXL Project Team. Status: Unclassified but Sensitive. Draft Version 3.1. August 12, 2005. 55 pages. OASIS Submission 08/10/2005. See the associated posting from Elysa Jones: "Please find the attached EDXL-Resource Message Draft spec as handed off from the EIC and DHS/DM Program." Background is given in "Messages for Standardization — EDXL Standard Format for Resource Messaging."

    "Incident and event management professionals have begun defining requirements for specific messaging needs. They asked for messages to request (or respond to requests) for persons and things required in emergencies (later expanded beyond 'emergencies' to also include everyday incidents and events). They said that messages were needed for resource requests related to persons and things... The Resource message set will facilitate requests, orders, and requests for information, demobilization and tracking of all types of resources (human resources, vehicles, equipment, supplies, and facilities, as well as packages and teams composed of many of these). Resource Messaging facilitates coordination of multiple resource requests across multiple incidents or events (i.e. management of scarce resource)..."

    EDXL Resource XML Schema; see the associated posting for 'EDXL-RM.xml' — XML source for the EDXL-Resource spec as handed off by the EIC and DHS/DM Program. [Resource Messaging cache .DOC, Resource Messaging source; XML source]

About the Common Alerting Protocol (CAP)

"The Common Alerting Protocol (CAP) provides an open, non-proprietary digital message format for all types of alerts and notifications. It does not address any particular application or telecommunications method. The CAP format is compatible with emerging techniques, such as Web services, as well as existing formats including the Specific Area Message Encoding (SAME) used for the United States' National Oceanic and Atmospheric Administration (NOAA) Weather Radio and the Emergency Alert System (EAS), while offering enhanced capabilities that include:

  • Flexible geographic targeting using latitude/longitude shapes and other geospatial representations in three dimensions
  • Multilingual and multi-audience messaging
  • Phased and delayed effective times and expirations
  • Enhanced message update and cancellation features
  • Template support for framing complete and effective warning messages
  • Compatible with digital encryption and signature capability
  • Facility for digital images and audio

Key benefits of CAP will include reduction of costs and operational complexity by eliminating the need for multiple custom software interfaces to the many warning sources and dissemination systems involved in all-hazard warning. The CAP message format can be converted to and from the 'native' formats of all kinds of sensor and alerting technologies, forming a basis for a technology-independent national and international 'warning internet.'

The primary use of the CAP Alert Message is to provide a single input to activate all kinds of alerting and public warning systems. This reduces the workload associated with using multiple warning systems while enhancing technical reliability and target-audience effectiveness. It also helps ensure consistency in the information transmitted over multiple delivery systems, another key to warning effectiveness.

A secondary application of CAP is to normalize warnings from various sources so they can be aggregated and compared in tabular or graphic form as an aid to situational awareness and pattern detection.

Although primarily designed as an interoperability standard for use among warning systems and other emergency information systems, the CAP Alert Message can be delivered directly to alert recipients over various networks, including data broadcasts. Location-aware receiving devices could use the information in a CAP Alert Message to determine, based on their current location, whether that particular message was relevant to their users.

The CAP Alert Message can also be used by sensor systems as a format for reporting significant events to collection and analysis systems and centers...

The National Science and Technology Council report on 'Effective Disaster Warnings' released in November, 2000 recommended that "a standard method should be developed to collect and relay instantaneously and automatically all types of hazard warnings and reports locally, regionally and nationally for input into a wide variety of dissemination systems."

An international working group of more than 130 emergency managers and information technology and telecommunications experts convened in 2001 and adopted the specific recommendations of the NSTC report as a point of departure for the design of a Common Alerting Protocol (CAP). Their draft went through several revisions and was tested in demonstrations and field trials in Virginia (supported by the ComCARE Alliance) and in California (in cooperation with the California Office of Emergency Services) during 2002 and 2003.

In 2002 the CAP initiative was endorsed by the national non-profit Partnership for Public Warning, which sponsored its contribution in 2003 to the OASIS standards process. In 2004, CAP version 1.0 was adopted as an OASIS Standard..." [adapted from the CAP v1.1 Introduction]

About EDXL

The Disaster Management eGov Initiative of the Department of Homeland Security (DHS) determined in 2004 to launch a project to develop interagency emergency data communications standards. It called together a group of national emergency response practitioner leaders and sought their guidance on requirements for such standards. In June, 2004 the first such meeting identified the need for a common distribution element for all emergency messages. Subsequent meetings of a Standards Working Group developed detailed requirements and a draft specification for such a distribution element (DE).

During the same period the DM Initiative was forming a partnership with industry members of the Emergency Interoperability Consortium (EIC) to cooperate in the development of emergency standards. EIC had been a leading sponsor of the Common Alerting Protocol (CAP). Both organizations desired to develop an expanded family of data formats for exchanging operational information beyond warning.

EIC members participated in the development of the DE, and in the broader design of the design of a process for the development of additional standards. This was named Emergency Data Exchange Language (EDXL).

The goal of the EDXL project is to facilitate emergency information sharing and data exchange across the local, state, tribal, national and non-governmental organizations of different professions that provide emergency response and management services. EDXL will accomplish this goal by focusing on the standardization of specific messages (messaging interfaces) to facilitate emergency communication and coordination particularly when more than one profession is involved. It is not just an emergency management domain exercise.

EDXL is a national effort including a diverse and representative group of local, state and federal emergency response organizations and professionals, following a multi-step process. Just as a data-focused effort targets shared data elements, the EDXL process looks for shared message needs, which are common across a broad number of organizations. The objective is to rapidly deliver implementable standard messages, in an incremental fashion, directly to emergency response agencies in the trenches, providing seamless communication and coordination supporting each particular process. The effort first addresses the most urgent needs and proceeds to subsequent message sets in a prioritized fashion. The goal is to incrementally develop and deliver standards.

EDXL is intended as a suite of emergency data message types including resource queries and requests, situation status, message routing instructions and the like, needed in the context of cross-disciplinary, cross-jurisdictional communications related to emergency response.

The priorities and requirements are created by the DM EDXL Standards Working Group (SWG) which is a formalized group of emergency response practitioners, technical experts, and industry.

The draft DE specification was trialed by a number of EIC members starting in October, 2004. In November, 2004, EIC formally submitted the draft to the OASIS Emergency Management Technical Committee for standardization... [from the EDXL History document]

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