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Sim Card Mundi ofrece tarjetas SIM M2M globales con cobertura mundial y intinerancia en más de 200 países y 1000 redes.
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M2M, or machine-to-machine, is a direct communication between devices using wired or wireless communication channels. M2M refers to the interaction...
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GSM stands for Global System for Mobile Communication. It is a digital mobile telephony system used for trans-receiving of the data and voice...