| 摘要 |
Currently in a wired phone network a subscriber is identified by their physical connection. In this invention a phone user will be identified to the fixed network by a Subscriber I dentification Module (SIM) to provide user identification secure (encrypted) communications and global roam ing in a fixed telecommunications network. The SIM is a unique identifier. In the example liste d it is a smartcard containing information about the user. It could also be a finger print used in c onjunction with a biometrics scanner, or any other secure device used for unique identification.
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