31st August 2013 at 21:05
#67446
pix
Guest
hi,
If ATT is Disable, then the MS is not allowed to send an IMSI ATTACH in the cell.
If ATT=Enable, then the MS is allowed to do it, therefore it will do it at Switch On.
Indeed, IMSI ATTACH is only done at MS Switch On, or when switching off the “Airplane” Mode.