Theodore Wallingford - książki
Tytuły autora: Theodore Wallingford dostępne w księgarni Helion
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Voice over Internet Protocol (VoIP) is gaining a lot of attention these days, as more companies and individuals switch from standard telephone service to phone service via the Internet. The reason is simple: A single network to carry voice and data is easier to scale, maintain, and administer. As an added bonus, it's also cheaper, because VoIP is-
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