Here is the list of criteria which a node needs to meet in order to be an official PersonalTelco node. See NodeTypes for a list of all the different types of nodes:

All Nodes

Gateway Node

Repeater Node

Document Recommendation: Consider attaching MUST, SHOULD, etc. directives as they are used in RFCs: -RossOlson (I would but I'm not sure what the other members have in mind.)