BusinessPhone Communication Platform 5.1
Commands > Commands 6000...6999

## 6713
Cost limit

This command can be used to define a limit for the cost accumulators, which will give a warning telling "time to read meters", if exceeded.

The intention with this limit is to give the customer a possibillity to get an alarm when the call meter of a trunk or extension exceeds a value regarded as "extremely high".

In those cases the customer isn't interested in getting information about "extremely high costs", this limit is preferably set to a value which prohibits the cost accumulator from losing precision.

(The cost accumulator is stored in exponential form and the mantissa is represented by a limited number of bits. If the accumulated value gets very high and the cost for a cheap (local) call should be added, the new accumulated value will sooner or later not give an exact result but be rounded. At the end the addition of a small number will not effect the accumulated value at all.)

To avoid this the limit should be set to a value lower or equal to :
3600000*cost of cheapest call*acceptable error in procent

Example: In Sweden the cost of the cheapest (local) call is 0.2875 Kr. The customer accepts an error of 0.5 % of the last additions before the warning is given. In this case it means that the customer accepts that the cost for a local call is rounded to 0.288 before the addition.
The limit should in this case be set to:
3600000*0.2875*0.5 = 517000 Kr .

Value: Decimal number (max. 9 digits including decimals)

The default value for COST LIMIT (Accuracy limit) will now be set to 75 percent of max. value (750000000).

Minimum required authority level from telephone: 1

Accessible via BMS: Yes

Revision: D © Ericsson Enterprise 2003