| 单词 | SIM (Subscriber Identification Module) |
| 释义 | SIM (Subscriber Identification Module) A smart card that serves as a security mechanism in GSM cellular radio networks.The SIM, which plugs into a card slot in the GSM handset, stores user-profile data, a description of access privileges and features, and identification of the cellular carrier that hosts the home registry.The SIM also can store telephone numbers entered by the user into a personal directory.The SIM can be used with any GSM set, thereby providing complete mobility across nations and carriers supporting GSM, assuming that cross-billing relationships are in place. See also carrier, cellular radio, and GSM. |
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