Species whether the usage for a Service with a Usage Based Billing plan can be billed at a lower-priced Tier after having been billed at a higher-priced Tier.

The number of elapsed days before the applicable statistics are automatically purged from the stats table.

	Warning
	The applicable statistics are purged even if they have not been used for a Usage Based Computation Result

Usage Plan Name.

Statistics recorded in the stats table may represent a direction measurement by using a Named Samples. An inbound static is denoted by "in='value'". An outbound statistic is denoted by "out='value'". Both directions may be recorded in the stats table using the form in='value',out='value'. Computations may be based based on in values, out values, the larger of the two values, or the sum of the in and out values. Choose Not Applicable when using the Sum computation method.

Specifies the usage display precision shown to customers. This option does not effect some values displayed in the staff interface.

Used when the Linear style Tierplan is selected. Pricing is computed by multiplying linearprice and (Usage Based Computation Result minus linearfree). Ignored when the Step style Tierplan is selected.

Used when the Linear style Tierplan is selected. Pricing is computed by multiplying linearprice and (Usage Based Computation Result minus linearfree). Ignored when the Step style Tierplan is selected.

Computational method used to determine Usage Based Computation Result See Tierplan Valid Values.

System Identifier for a database row. In most cases automatically generated. Allowable range is 1-2147483647.

Used for the Percentile computation method.

Usage report for a Service may be mailed to the email address of the Account every reportfreq days. The last previous date a usage report was sent is stored in the bwreportdate field of the service table

Specifies whether or not the International System of Units are used when calculating units from certain data. Presently this option is used only when loading stats data from the datacall table and in datacall reports.

Denotes what style of Usage Plan is being used. See Tierplan Valid Values.

A description of the type of sample. This links the type of sample specified here with statistics entered in the stats table using enter_stat with the stype parameter set to the value specified here.

Whenever usage costs reaches this value, the customer's service is suspended for over usage for the remainder of the service's usage cycle. This option is available only for the MIN, MAX and SUM computation methods. A zero value disables this option.

Whenever the usage computed value reaches this value, the customer's service is suspended for over usage for the remainder of the service's usage cycle. This option is available only for the MIN, MAX and SUM computation methods. A zero value disables this option.

The units of measurement captured in the stats table.

	Warning
	This is for descriptive purposes only. Specifying units such as MB and capturing the data in another such as Mb will cause incorrect billing and confusion

Whenever the difference between the current usage cost and the previous usage cost reaches this amount, send the customer an email warning. This option is available only for the MIN, MAX and SUM computation methods. A zero value or a missing email template (usagereport.email) disables this option.