Wittenberg, Nicholas.

Understanding voice over ip technology [[Book] /] Nick Wittenberg. - inter ed. - Clifton Park, NY : Delmar Cengage Learning, 2009. - vii,387p ; : ill ; 24cm. + 1 CD-ROM (4 3/4 in)

includies index includies CD

All age.

9780840031303 0840031300


internet technology

621.382

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