Erlang software

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Our Erlang software products use the long-established Erlang traffic models to assist you with the design and analysis of your voice communications networks.

Erlang for Excel

An Add-In for Microsoft Excel that introduces eight new functions to Excel, allowing you to incorporate Erlang B, Extended Erlang B and Erlang C calculations in your own spreadsheets. Packaged with Westbay Traffic Calculators, this provides you with the industry-standard Erlang calculation tools for life.

Free upgrades for life on a single computer for a once-only charge of just $99.

Westbay Traffic Calculators

Packaged with Erlang for Excel, this programme comprises four Windows calculators for Erlang B and Erlang C. Use them to dimension trunk groups and predict the performance of your help desk or call center agents.

Westbay Traffic Calculators - Erlang B
Westbay Traffic Calculators – Erlang B calculator

Free upgrades for life on a single computer for a once-only charge of just $99.

VoIP Calculator

Our Voice over IP bandwidth calculator for Windows. It includes two calculators: the Lines and IP Bandwidth Calculator and the Erlangs and IP Bandwidth Calculator.

VoIP Calculator - bandwidth calculation

Lifetime use on a single computer with free upgrades for only $59.

Our customers

Buy our Erlang products and you’ll be in good company. We have become the trusted supplier of industry-standard Erlang software to the world’s largest companies and governments. Tens of thousands of customers in 125 countries across six continents rely on us for their Erlang traffic software.

American Express
United Nations