Abstract

The National Telephone Exchanges Dataset presents the spatial locations of Australia's known Telephone Exchanges. The purpose of the National Telephone Exchanges Dataset is to support decision makers from and all levels of National, State and Local Government, Industry and other interested parties to make better, and more informed decisions based on evidence based information to underpin future emergency management planning and communications management decisions.
Google map showing geographic bounding box with values North bound -9 East bound 168 West bound 96 South bound -44

Product Type/Sub Type

dataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication revision)

2012-01-01T00:00:00 2016-08-29T00:00:00

Product Type

dataset

Topic Category

geoscientificInformation

GA Catalogue Number

74665 Product http://www.ga.gov.au/metadata-gateway/metadata/record/74665/

Keywords

Database
risk assessment
resource management
National dataset
AU
Build Environment and Design

Resource Language

Resource Character Set

Resource Security Classification

Data Reference System
European Petroleum Survey Group (EPSG) Geodetic Parameter Registry2008-11-12T00:00:00publicationEuropean Petroleum Survey Grouphttp://www.epsg-registry.org/GDA94 (EPSG:4283)EPSG7.9

Geographic Extent

North bound
-9
East bound
168
West bound
96
South bound
-44

Lineage

The telephone exchanges dataset was digitized in 2012 from orthophotos and satellite imagery held within Geoscience Australia. Image resolution ranged from 0.15m to 2.5m. Source Information The primary information source used to locate and attribute the telephone exchanges was the ADSL2 Exchanges website (www.adsl2exchanges.com.au). The exchange name, address, latitude and longitude were obtained from the website after receiving written permission to use the ADSL2 Exchanges data. The generated table was converted to a point feature class based on the latitude and longitude fields. The Exchange Service Area (ESA) codes were generated from the spreadsheet Telstra_access-broadband-adsl-en-ex.xls, available from the Telstra Wholesale website (http://telstrawholesale.com.au/download/document/access-broadband-adsl-en-ex.xls), then checked for accuracy by GA. The point locations were validated against imagery and other publicly available information. Where required, the point locations were moved to the correct location (centre of the exchange building roofline) and attribution was adjusted. Polygons of the building rooflines were digitized to create a Telephone Exchanges Polygon dataset. Primary information sources were supplemented with online, publicly available information used to confirm location and attribute the features, such as the Whirlpool Australian Exchange Guide v3.0 (http://whirlpool.net.au/wiki/Australian_Exchange_Guide).

DISTRIBUTION Format

html
gdb
csv
kml
xls
jpg
pdf

Source Description

Source data not available.

Metadata File Identifier

c9f19100-9224-380e-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

METADATA SECURITY CLASSIFICATION

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address