How does an international phone call work?

Baz: How does an international phone call work?
A phone call works by converting sound to electricity which travel through wires to the other end right? So how does an international call over oceans travel? Are there phone lines under the ocean?

Answers and Views:

Answer by ?
ever hear of satellites?

Answer by CJ
There are miles of fiber optic cables running across the ocean floor, but it could be a combination of anything else including regular phone lines or satellites, at any given moment.

Answer by Desert Dust
The vast majority of international phone calls use transoceanic undersea cables. Older cables were copper wire and the newest using fiber-optic cable.