The customer must now determine the number of area codes and exchanges for which each line pool should be used. After finding the following Information, he or she writes it in the “Number of Area Codes or Exchanges for which Line Pool is Used” column:
—Pool 890 serves area code 413 (toll dialing).
—Pool 891 serves 16 area codes in its region (toll dialing).
—Pool 9 serves all the area codes in the U.S. (toll dialing).
—Pool 890 serves approximately 500 exchanges in the 617 area code (local d i a l i n g ) .
—Pool 9 serves 19 exchanges in the local calling area (local dialing).
The information in the ARS Worksheet allows the customer to complete his or her default tables. The customer turns to the Form for Automatic Route Selection Tables page (found with the instructions in this Planning Guide) that contains Tables 8 and
9.Looking at his or her completed worksheet, the customer decides that the local lines (pool 9) handle the greatest amount of 1 + area code (toll) dialing since they serve all area codes in the United States. He or she enters 9 on the first line in the Pool column of Table 8, the Default Toll Table. Next the customer decides that line pool 890 serves the greatest number of exchanges using
In summary, as a result of following the steps indicated, this Massachusetts customer’s ARS default tables and line pools are set up as follows:
● The default toll table contains the local lines.
●The default local table contains the
●Line Pool 890 is used to route calls to the 413 area code and its exchanges over the
●Line Pool 9 is used to route calls to 19 local exchanges over the local lines.
●Line Pool 891 is used to route calls to the 16 area codes that are served by the regional (Band 1) WATS lines.
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