| 摘要 |
The method involves allowing transmission between a router (18) and a safety module i.e. subscriber identity module card (14), in the presence of radio-frequency communication flow (F) received by the router. Presence of radio-frequency communication flow is detected using an antenna associated to a detection circuit (22) distinct from the router. Presence of radio-frequency communication flow is detected indirectly by presence of supply voltage extracted by the router. Messages transmitted by the router to the module are detected and interpreted. An independent claim is also included for a telecommunication device comprising a protection circuit for protection of connection between a router and a safety module.
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