Learn some PABX administration from compagnies like Meridian or in Belgium Ascom and I'm sure you'll appreciate the time, effort and the power of the telecom world a lot better. I'm sure you can and will learn it on yourself... but are you content knowing only half of what you could...

ps: It's nice to have principles but ... have some moral 2

Pps: Negative; Never be ashamed to be a Belgium