what do they cost to use etc,,interested to know more about what...

what do they cost to use etc,,interested to know more about what profits are to be made etc,,in there announcenment its says 4 months l think to roll out the 50 or did l read wrong,,also how long does telstra have on coming to terms with them if all succesful etc,l have a relatively small stake but thinking about buying a few more seeing that its pretty stable in the 2 bracket