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SIM Cards and How They Are Used for Testing

Authored on: Sep 4, 2003

Technical Paper

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The GSM phone is a mass product with no person-alised data except for its serial number. All the information required to address the phone or for the phone to identify itself in the network, is contained on the subscriber identity module (SIM). This paper explains how the SIM card works and how it is used to test GSM networks.

For more information on SIM card testing, visit Willtek Communications' Web site.

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