Heh, hardly! It's a real eye-opener touring around the world, and discovering that backwoods Canada really is backwoods in so many many ways.

The installer guy shows up, with a belt hung line test unit. If he wants to find an unused pair, he selects a likely candidate from the bundle, and checks for existing signals with the line test unit. Thankfully, it will see DSL as well as voice equipment, so things should be safe enough. Time will tell.