El Friday 05 September 2008 10:00:04 Adrian Georgescu escribió:
> The problem with concurrent prepaid calls and single balance is that
> you have to correlate between the call control and rating angine
> somehow so that all calls terminate when balnce becomes zero. The
> problem is a bit complex:
>
> Example:
>
> Balance = 10.
> A call starts to destination XXX, for the sake of example max session
> time = 2 minutes
> After one minute, you start second call to destination YYY which has a
> different price and your balance is not anymore 10 but depends on the
> duration of the first call which is in progress.
>
> What is the maximum session time for it given that the first call is
> already in progress?
> What should happen with the first call?
>
> I am looking for suggestions on implementing a proper algorithm to
> deal with this situation in the rating engine. If you have any I would
> be glad to hear it.
>
> Adrian
Hi Adrian, A simple approach could be:
- New Call1 to Dest XXX
- Get cost per sec to dest XXX
- Get connection cost to dest XXX (if any)
- Set customer.balance =- thisCallConnectionCost
- Set global var customer.costPerSec to customercostPerSec =+
thisCallCostPerSec
- Notify externalWatcher new customer.costPerSec
- BYE Call1 to Dest XXX
- Get disconnection cost to dest XXX (if any)
- Set customer.balance =- thisCallDisconnectionCost
- Set global var customer.costPerSec to customercostPerSec =-
thisCallCostPerSec
- Notify externalWatchr new customer.costPerSec
Then on a separate thread or proc or "something" ...
- Every timeslice
- while activeCustomers.next()
- activeCustomer.balance =- activeCustomer.costPerSec
- If (activeCustomer.balance <= activeCustomer.lowBalanceAlarm)
and
!activeCustomer.allreadyNotified
- Send lowBalance Notify to customer
- If (activeCustomer.balance <=
activeCustomer.minAllowedBalance)
- while activeCustomer.activeCall.next()
- activeCustomer.activeCall.finish()
- activeCustomer.lockNewCalls()
I think it's a good approach
--
Raúl Alexis Betancor Santana
Dimensión Virtual S.L.
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