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Reply To: Trunk Engineering


Assuming that your traffic figure is for the busy hour, divide it by 36 to convert to Erlangs (33.333). Then, use our free online Erlang B Calculator, setting the blocking as 0.01.

The answer comes out at 45 lines.

We also sell a Windows version of this calculator for 80 US Dollars for a single user licence. This also includes an add-in for Excel that allows you to perform these calculations within a spreadsheet. Click here for more information. I have attached a screenshot of the Windows product to this message.

Westbay Traffic Calculators

Please feel free to contact us if you require any further information.