Hi guys.
First of all, the pieces of information available in the documents section of the ttn repository and, the one available in the doc repository are partially outdated. Things have moved a bit and those documents aren't accurate anymore.
They will be updated soon though. Also, I'll develop and give technical details about the internal mechanisms and architecture implementation choices of the network. You'll find an accurate definition of protocols used and also an overview of changes to which we're already looking forward.
Also, from a user / developer perspective, you will probably be more interested in the way you can communicate with the network entrance points (gateway -> router, app -> handler). Those details are going to be mentioned on the wiki but I am not sure about putting there the intrinsic machinery of the network.
Should you be nevertheless interested in the internal mechanisms, I respectfully ask you to be a bit patient :). We're working hard to release and deploy something soon, explanations will come right after (end of March / beginning of April).