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Internet Telephone Basics: How to Select, Setup, Use and Optimize Telephone Service through the Internet (книга)

Internet Telephone Basics: How to Select, Setup, Use and Optimize Telephone Service through the Internet
Автор: Lawrence Harte
Оригинал издан: ????

«Internet Telephone Basics: How to Select, Setup, Use and Optimize Telephone Service through the Internet»книга ???? года.

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«Internet Telephone Basics explains how and why people and companies are changing to Internet Telephone Service. Learn how much money can be saved using Internet telephone service and how you can to use standard telephones and dial the same way while…»

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