MSAG (Master Street Address Guide): Difference between revisions

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MSAG (Master Street Address Guide) is a database of street names and house number ranges within their associated communities defining Emergency Service Zones (ESZs) and their associated Emergency Service Numbers (ESNs) to enable proper routing of 9‑1‑1 calls.

Related Terms:

MSAG Address

An address recognized by Public Safety for the dispatch of emergency first responders. It is an absolute and unique address in that variants for directions, street spelling, street suffixes, and community names are not allowed. It is preferred that MSAG Addresses be in Civic Address format.

MSAG Baseline

An MSAG file that is a snapshot image which represents a complete, up-to-date set of MSAG data at the point in time it was created.

MSAG Consumer

Identifies appropriate organizational entities that have an accepted need for the MSAG in order to support E9-1-1 (e.g., DBMSPs, SPs, Wireless, VDBs, ERDBs, VSPs).

MSAG Coordinator, MSAG Administrator

The individual with the 9‑1‑1 Governing Authority or 9‑1‑1 Authority who has responsibility for all daily maintenance of the 9‑1‑1 database, to include, but not limited to MSAG maintenance, 9‑1‑1 Inquiry resolution, notifying Service Providers of address changes or corrections for a resident.

MSAG Delta

A file of incremental changes to the MSAG. The changes are applied in the order that they are presented, to either the last updated version of the MSAG or a current Baseline of the MSAG, whichever is more recent.

MSAG Discrepancy

A record being retrieved from ALI during an actual E9-1-1 call with incorrect information because an MSAG field was incorrect. For example, incorrect ESN assignment or transposition of numbers, incorrect house number ranges, odd/even indicator.

MSAG Error

A hard error from DBMS service order processing or a manual update that failed to meet the MSAG specifications.

MSAG Local Operational

An MSAG maintained in a format other than the recommended standard set forth in NENA 02-010 and 02-011. This format may consist of variances to the standard MSAG such as unparsed and concatenated fields for directional, street name, and suffix.

MSAG Operator

Typically, this is the Database Management System Provider who works in conjunction with a 9-1-1 Administrator.

MSAG Source

Represents a recognized supplier of MSAG files, which may be the MSAG Administrator, or an authorized MSAG Operator. The MSAG Source is typically the E9-1-1 System Service Provider, but may be the 9-1-1 Administrator’s MSAG Administrator.

MSAG Standard

An MSAG maintained in accordance with the data fields as recommended in NENA standards.

Relevant NENA Documents
Note: To find and download the document, copy the document number (like NENA-STA-010) from below and search the NENA Standards and Documents page.

NENA 02-011, NENA Data Standards for Local Exchange Carriers, ALI Service Providers & 9-1-1 Jurisdictions
NENA 71-501, NENA Information Document for Synchronizing Geographic Information System databases with MSAG & ALI
NENA-STA-010, NENA i3 Standard for Next Generation 9-1-1
NENA-STA-015, NENA Standard Data Formats for 9-1-1 Data Exchange & GIS Mapping

@@ Line 1: / Line 1: @@
-A database of street names and house number ranges within their associated communities defining Emergency Service Zones (ESZs) and their associated Emergency Service Numbers (ESNs) to enable proper routing of 9-1-1 calls.
+'''''MSAG (Master Street Address Guide)''''' is a database of street names and house number ranges within their associated communities defining Emergency Service Zones (ESZs) and their associated Emergency Service Numbers (ESNs) to enable proper routing of 9‑1‑1 calls.
+{{Related Terms:}}
-===MSAG Address===
-Address recognized by Public Safety for the dispatch of emergency first responders.  It is an absolute and unique address in that variants for directions, street spelling, street suffixes, and community names are not allowed.  It is preferred that MSAG Addresses be in Civic Address format.   The community name associated with this address format is assigned by the Addressing Authority in cooperation with the 9-1-1 Administrator and may or may not be the same as the community name assigned by the USPS.  MSAG addresses are used to route 9-1-1 calls and for ALI display.  NOTE: MSAG Address data format is not standardized throughout the country.  This is generally attributed to legacy system limitations that have been continued as operational practices on the part of 9-1-1 administrative entities. This fact gives rise to the need for two subtending MSAG definitions. (See Standard MSAG and Local Operational MSAG.)
+'''''MSAG Address'''''
-===Baseline MSAG===
-MSAG file that is a snapshot image which represents a complete, up-to-date set of MSAG data at the point in time it was created.
+An address recognized by Public Safety for the dispatch of emergency first responders. It is an absolute and unique address in that variants for directions, street spelling, street suffixes, and community names are not allowed. It is preferred that MSAG Addresses be in Civic Address format.
-===Civic to MSAG Translation===
-Translations consist of processes, tables or rules that can be used to:  Translate a Civic Address from/to an MSAG-format address. Translate a Postal Address from/to an MSAG-format address. Translate Landmark from/to an MSAG-format address (e.g. Empire State Building ---' 350 5TH AVE). A civic address may need to be translated so that the data is consistent to the format within the existing PSAP equipment and processes (i.e., CAD, mapping, CPE).
+'''''MSAG Baseline'''''
-===Definitive Civic Address===
-In the context of location information to support IP based emergency services: An address that can be resolved into a local MSAG valid address, will yield a route to the correct PSAP when used to route an emergency call, and is bound to a specific VoIP end-point.
+An MSAG file that is a snapshot image which represents a complete, up-to-date set of MSAG data at the point in time it was created.
-===Delta MSAG===
-The Delta MSAG is a file of incremental changes to the MSAG.  The changes are applied in the order that they are presented, to either the last updated version of the MSAG or a current Baseline of the MSAG, whichever is more recent.
+'''''MSAG Consumer'''''
-===MSAG Administrator===
-Identifies appropriate organizational entities that have an accepted need for the MSAG in order to support E9-1-1 (e.g., DBMSPS, SPs, Wireless, VDBs, ERDBs, VSPs).
+Identifies appropriate organizational entities that have an accepted need for the MSAG in order to support E9-1-1 (e.g., DBMSPs, SPs, Wireless, VDBs, ERDBs, VSPs).
-===MSAG Operator===
-Typically the Database Management System Provider (DBMSP). Works in conjunction with 9-1-1 Administrator to provide and maintain the database equipment and infrastructure that supports the access and retrieval of the MSAG data by authorized parties.
+'''''MSAG Coordinator, MSAG Administrator'''''
-===MSAG Consumer===
-Identifies appropriate organizational entities that have an accepted need for the MSAG in order to support E9-1-1 (e.g., DBMSPS, SPs, Wireless, VDBs, ERDBs, VSPs).
+The individual with the 9‑1‑1 Governing Authority or 9‑1‑1 Authority who has responsibility for all daily maintenance of the 9‑1‑1 database, to include, but not limited to MSAG maintenance, 9‑1‑1 Inquiry resolution, notifying Service Providers of address changes or corrections for a resident.
-===MSAG Discrepancy===
-An MSAG Discrepancy is defined as a record being retrieved from ALI during an actual E9-1-1 call with incorrect information because an MSAG field was incorrect.  For example, incorrect ESN assignment or transposition of numbers, incorrect house number ranges, odd/even indicator.
-===MSAG Error===
+'''''MSAG Delta'''''
-An MSAG error is defined as a hard error from DBMS service order processing or a manual update that failed to meet the MSAG specifications.
+A file of incremental changes to the MSAG. The changes are applied in the order that they are presented, to either the last updated version of the MSAG or a current Baseline of the MSAG, whichever is more recent.
-===MSAG Source===
-Represents a recognized supplier of MSAG files, which may be the MSAG Administrator, or an authorized MSAG Operator. The MSAG Source is typically the E9-1-1 System Service Provider, but may be the 9-1-1 Administrator's MSAG Administrator.
+'''''MSAG Discrepancy'''''
-===MCS===
-MSAG Conversion Services
+A record being retrieved from ALI during an actual E9-1-1 call with incorrect information because an MSAG field was incorrect. For example, incorrect ESN assignment or transposition of numbers, incorrect house number ranges, odd/even indicator.
+'''''MSAG Error'''''
+A hard error from DBMS service order processing or a manual update that failed to meet the MSAG specifications.
+'''''MSAG Local Operational'''''
+An MSAG maintained in a format other than the recommended standard set forth in NENA 02-010 and 02-011. This format may consist of variances to the standard MSAG such as unparsed and concatenated fields for directional, street name, and suffix.
+'''''MSAG Operator'''''
+Typically, this is the Database Management System Provider who works in conjunction with a 9-1-1 Administrator.
+'''''MSAG Source'''''
+Represents a recognized supplier of MSAG files, which may be the MSAG Administrator, or an authorized MSAG Operator. The MSAG Source is typically the E9-1-1 System Service Provider, but may be the 9-1-1 Administrator’s MSAG Administrator.
+'''''MSAG Standard'''''
+An MSAG maintained in accordance with the data fields as recommended in NENA standards.
+{{RelevantNENADocs}}
+*'''NENA 02-011''', NENA Data Standards for Local Exchange Carriers, ALI Service Providers &amp; 9-1-1 Jurisdictions
+*'''NENA 71-501''', NENA Information Document for Synchronizing Geographic Information System databases with MSAG &amp; ALI
+*'''NENA-STA-010''', NENA i3 Standard for Next Generation 9-1-1
+*'''NENA-STA-015''', NENA Standard Data Formats for 9-1-1 Data Exchange &amp; GIS Mapping
 [[Category:Glossary]]