We have a 10 hr / month account that is charged at a base rate of 
$20.00, excess hours are charged at $2.40 per hour.
The rate settings are as follows:
Standard time:      10
Standard Interval:  3600
Standard Charge:   $0.00
Overtime: selected
Over interval:      60
Over Charge:        $0.04
The service is set to a cost of $20.00
Emerald (2.5.278) has just generated the following invoice:
Usage: 773 Mins.	$30.52
10 hrs per month    $20.00
I would have thought this should be:  773 - (10*60 Mins) = 173 Mins
or 173*.04 = $6.92 (+ $20.00)
The time on log indicates approximately 13 hr 10 mins for this 
period.  I have also noticed something else strange - the invoice 
gives a date of 11/30/99 for the usage line - I would have thought 
that the usage would have been for the previous period (ie 9/30/99-
10/30/99).
Could anybody explain going on?
Marcus 
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