If you have an analogue business phone system, you may be wondering if you can go 'digital' and make use of your existing data network. With so many phone system vendors and options in the market, you may also be wondering if you can "do-it-yourself". JPY made this transition a year ago and we have written a paper describing our experience. If you are considering a similar move, then it is very important to plan it a step at a time with a fallback position in case things don't work as planned.

For the detailed story of our experience, have a look at our paper entitled "Adopting an Open Source VoIP Phone System".