Sure.
A voice line is about 56 kilobits a second, originally over a twisted pair, which is copper. It's the old phone line, POTS, plain old telephone system, delivered to your set.
What Industry Canada did, as I understand it—and as an aside, what my engineer told me to make sure I bring up—is that the pricing is based on how much 56 kilobits is used in the spectrum, and that's how the pricing is come to.