Patent ID: 6148192
Filing Date: 2000-11-14
Classification: H04W

Abstract:
A method for checking the access right of a subscriber equipment in a mobile telephone system comprising a network infrastructure and a plurality of mobile equipment, each said mobile equipment being a combination of a subscriber equipment provided with an equipment identity and an individual subscriber identification module that is detachably connected to said subscriber equipment, whereupon a mobile equipment can be formed by attaching said subscriber identification module to any subscriber equipment, said method comprising:before said subscriber identification module is detached from said subscriber equipment, storing said equipment identity of said subscriber equipment in said subscriber identification module;after said subscriber identification module has been connected to any said subscriber equipment, comparing said equipment identity stored in said subscriber identification module to said equipment identity stored in said subscriber equipment of the combination; andwhen said equipment identities are identical, selecting a first alternative for checking the access right; andwhen said equipment identities are different, selecting a second alternative for checking the access right.