I too looking for a nice tutorial which talks about “Telecommunications terminology” (like Bids, Seizures, Erlang, Traffic Volume, Traffic Intensity) in details.
i was just looking around on http://www.erlang.com it discusses a little on the “white page” side of the subjects, but never the less is a good reference. They also have some great calculators you can either buy or use for free to determine trunking needs for traffic volumes.