[Prepaid Calling Card Starter]

How many ports do we need to have inorder to have the least amount of Blocked calls due to the not sufficient ports(would like to know how many ports is needed so when customers call they don’t get busy signals and there is always enough ports for them) if:

1) When we have just 8 hours traffic in a day.
2) When we have 80 min in average for each 10$ phone card.
3) Let’s say when we want to have 1200 phone cards sold in a month.

[Ben]

You could try using the erlang calculator on this web page…..

Or a very safe assumption is to approximate that 1 E1 = 30 ports will handle 250,000 minutes per month.

[Author]

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