BIBLIOGRAFIA

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[HEL 92] HELD, Gilbert. Modem - O guia de referência completo. Rio de Janeiro : Campus, 1992.

[HAL 85] HALSALL, Fred. Indtroduction to Data Communications and Computer Networks. Addison-Wesley Publishing Company Inc., 1985.

[MON 90] NONTORO, Fábio de Azevedo. São Paulo: Érica, 1990.