I take it you have not been to Area C for a while!
I put Internet comms into the whole village at area c last november. They are running nortel switches at the end of every donga and is hooked in to BHP's optic fibre back to newman. I was up at Area C only 3 months ago and saw how well it was working.

P.S Telfer has telstra gsm coverage

Murrin has telstra gsm coverage, but I dont think they have lines in the dongas as a couple of my mates worked there and their main complaint was that they couldnt get internet.