Datatex Dynamics

Hi

Upon registration on a new TNG system at my client I keep getting invalid key when I enter the products serial number?

Please assist...

I need to add custom rates my voip supplier charges per minute as follows: Local 0.36c Local Off-peak 0.26c National 0.36c National Off-peak 0.26c MTN & Vodacom 0.95c MTN & Vodacom Off-peak 0.85c etc How would I populate this into the custom ratebook? Would I be using per unit, min and max c...

How would I go about customizing the TNG ratebooks as a client of mine uses ECN for their VOIP solution.
Where may I get a manual on the TNG system to have a better understanding on how it functions as well?

Many thanks