Exchange Areas

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

Title: Exchange Areas

Abstract:

Telephone exchanges in Kentucky define a geographic area in which telephone prices and services are the same. This may be referred to as a rate area. The concept of exchange area is based on geography and regulation, not equipment . An exchange area polygon has only one operating company, which may be referred to as a local telephone company or incumbent local exchange carrier (ILEC or LEC). Area Codes and LATAs (Local Access Transport Area, which is the area local telephone companies are permitted to offer local or long distance telecommunications services), are defined by grouping exchange areas.

Supplemental_Information:

Kentucky ALLTEL and ALLTEL Kentucky are two different operating companies.

1. How should this data set be cited?

   Kentucky Public Service Commission (PSC), 1999, Exchange Areas.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -89.571121

   East_Bounding_Coordinate: -81.965126

   North_Bounding_Coordinate: 39.147629

   South_Bounding_Coordinate: 36.496998

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 2002

   Currentness_Reference: publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (373)

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   Exchange Areas

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   SQR_MILES

   Area of exchange area in square miles calculated on Kentucky Single Zone state plane coordinate system NAD83.

   NAME

   Name of Exchange Area (all caps)

   NAME2

   Name of Exchange Area (caps and lower case)

   LATA

   Local Access Transport Area assigned to the exchange. This is a group of exchange areas, which may extend across state boundaries, that define where local telephone companies are permitted to offer local or long distance telecommunications services.

   AREACODE

   The first three digits of a telephone number that correspond to the North American Numbering Plan, commonly referred to as the area code.

   PSC_ID

   Public Service Commission's Utility ID for the Local Exchange Carrier.

   LEC

   Name of local exchange carrier or operating phone company

   LECSHORT

   Shortened name of Local Exchange Carrier

   EX_ID

   Record Number or Unique ID for Exchange Area

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Kentucky Public Service Commission (PSC)

2. Who also contributed to the data set?

3. To whom should users address questions about the data?

   Ruth A. Rowles
   Kentucky Public Service Commission
   GIS Manager
   P.O. Box 615
   Frankfort, KY 40601
   502-564-3940 (voice)
   502-564-1582 (FAX)
   rarowles@ky.gov
   

This data set is used by the Kentucky Public Service Commission as basic reference information for defining the area of operation of local exchange carriers, for working with area codes (particularly the creation of new ones), and for rate cases.

1. From what previous works were the data drawn?

   (source 1 of 1)

2. How were the data generated, processed, and modified?

   Date: 1999 (process 1 of 4)

   World file constructed for scanned digital image of paper map produced by Ladd Engineering Associates, Inc., for the Kentucky Telephone Association in 1995 at a scale of 1:1,500,000 to match to a Kentucky South Zone State Plane Coordinate System NAD27 coverage of counties. The counties were compiled by Natural Resources Environmental Protection Cabinet at a scale of 1:24,000. The exchange areas were digitized with ArcView 3+ heads-up.

   Date: 1999 (process 2 of 4)

   Converted from shapefile to ArcInfo coverage to clean digitizing errors.

   Date: 1999 (process 3 of 4)

   One exchange, "Heath" in Ballard County was found to be in two separate polygons, and was "unioned" to act as one; two exchanges had the same name...Lewisburg, so renamed one of them Lewisburg Logan. Cumberland County in Burkesville was changed to Burkesville Rural; Harold Telephone Co. to Coalfields Telephone, South Central Bell to Bellsouth Telecommunications, and Mountain Rural Telephone Cooperative, to Mountain Telephone Cooperative.

   Date: 1999 (process 4 of 4)

   Coverage converted to Kentucky Single Zone coordinate system NAD83, and areas in square miles calculated. Converted to decimal degrees NAD83 shape file.

1. How well have the observations been checked?

2. How accurate are the geographic locations?

   Estimate based on accuracy of original data

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

5. How consistent are the relationships among the observations, including topology?

Are there legal restrictions on access or use of the data?

Access_Constraints:

There are no restrictions or legal prerequisites for accessing the data set.

Use_Constraints:

The user should give credit to the Kentucky Public Service Commission (PSC). The user must abide by the following data disclaimer. All information within the product is believed accurate but is not guaranteed without error. While attempts have been made to insure the correctness of the information presented, neither the Kentucky Public Service Commission nor any party involved in the creation and compilation of the data guarantees their accuracy, completeness, or suitability for a particular use. All critical information should be independently verified.

1. Who distributes the data set? (Distributor 1 of 1)

   Ruth A. Rowles
   Public Service Commission
   GIS Manager
   P. O. Box 615
   Frankfort, KY 40601
   502-564-3940 (voice)
   502-564-1582 (FAX)
   rarowles@ky.gov
   

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	ESRI Shapefiles Size: 1.762

   • Cost to order the data: No fees for files downloaded off web.

   • Special instructions:

     Refer to the Kentucky Public Service Commission web site at <http://psc.ky.gov/pschome.htm>.

   • Availability in digital form:

     Data format:	Size: 1.762

   • Cost to order the data:
   • Special instructions:

     Digital Form: Refer to the Kentucky Public Service Commission web site at <http://psc.ky.gov/pschome.htm> ("Quick Reference, Maps/Miscellaneous) to see if information is available there. Otherwise, refer to contact person.

Dates:

Last modified: September 16, 2002

Metadata author:

Ruth A. Rowles
Kentucky Public Service Commission
GIS Manager
P.O. Box 615
Frankfort, KY 40601
502-564-3940 (voice)
502-564-1582 (FAX)
rarowles@ky.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>

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Revised May 15, 2003