Hi, i recieved my sierra 885 moden today, ordered through telecom, however after is was installed it came up with 'reject network SIM', so rung telecom and they said it was because the sim had'nt been activated yet, give it 24 hours and we should be up and running.  I find it odd that it displays ' reject network sim.  Im thinking that there is a chance it could be faulty? What do you think?  Thanks