Welcome to the board moggey!
I'm in the dark about your questions right now, so if you could explain with some more detail, that would great!
Could you fill out your profile too? Thanks!
The first item you refer to "dig trace", is that an IP/DNS tracing program?
The second "t0/t2", I have no knowledge of.
The same goes for the third "dass lines", except my Googling of it says it's a form of ISDN line from BT.