hey guys, any phone line installers out there?

gotta question.

i'm probably going to cancel my att phone service, it's just your typical phone service, three lines.

I'm interested in the time warner digital service. Customer service told me that TW will do the installation up to the building. It's up to me or a phone service company to swap my wires to the new box they will install.

My question, is it just a matter of removing my three phone lines from the att box to the new TW box?
If so, I can do that no problem, I have some wiring skillz, haha.

If not, what is the process?

thanks,
allen