Sir, I think I can speak to that.
In the previous technology, the actual network itself was converting the analog voice to digital. Especially on the west coast, we make use of microwave links, so all of the microwave links are digital communications. For the actual voice—and this is even with the old technology—we converted the analog voice that was in the microphone at the centre to a digital version of the analog voice. That was then routed over the microwave links and was again converted from digital to analog and then transmitted, using FM over the VHF radio network.
That is how it was in the past with the old technology, and because, again, the front-line communication is still using channel 16, which is still an analog transmission, overall we're using the new technology in exactly the same way.