I have school project and I would like to have opinions and ideas from you guys.

I need to make report how to make your own VoIP configure text messages and send them from our server over bluetooth. The goal is to use school's network so teachers can talk to each other using VoIP.

We use mainly E-series Nokia mobile phones.
I think there is really many mobile phones, so thats why they dont want to do it manually to every single phone.

So is there any website or thread where is explained what those code lines means in configuration text message? I need to explain those in my report.