About us

Westbay Engineers Ltd: who we are, what we do and how to reach us.

About Westbay Engineers

We have been providing telecommunications project management and network design services since 1989. We’ve worked on many major projects for customers throughout Europe in the following business sectors:

  • Investment banking
  • Insurance
  • Telecommunications carriers
  • Energy
  • Manufacturing
  • Local Government

We published the world’s first free online Erlang traffic calculators in 1996, and they remain the most popular part of our web site. We offer telecommunications modelling software and telecommunications and call center tools for Microsoft Excel. Our customers include AT&T, British Telecom, Siemens, Ericsson and many other carriers and operators of private networks.

We have been providing VoIP termination services (H.323 and SIP) and call shop billing services since 2003.

We are a private limited company based in Crawley, near Gatwick Airport, 50 kilometres south of London in the U.K.

Contact us

Our email address is service@erlang.com. Please see our contact page for other ways to reach us.

“You distinguish yourselves from the vast internet hordes by virtue of your rapid, friendly email response.”
Martin F. Votel, Cincinnati Bell Telephone.

Our customers

Since launching our software products in 1996, we have become the preferred supplier of industry-standard Erlang calculation solutions for the world’s largest companies. We have sold software to tens of thousands of companies in 125 countries.

“I’m really happy with my decision to purchase this software from Westbay Engineers. This is the level of Service Quality that we all expect, and your company is doing an outstanding job is this area. You always have a quick answer and fulfil my expectations.”
Osvaldo Velarde, Citicorp