| 摘要 |
There is provided a method of monitoring access to a set of mobile communication networks, the method comprising: placing a testing device within the coverage area of a plurality of mobile communication networks, the plurality of mobile communication networks forming a set of mobile communication networks, the testing device comprising a network authentication device for a mobile communication network not in the set of mobile communication networks; initiating a succession of network registration procedures from the testing device; and storing, in the testing device, the identity of the mobile communication network that the testing device registers with as a result of each network registration procedure.
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