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Introduction to Ip Telephony: Why and How Companies Are Upgrading Private Telephone Systems to Use Voip (книга)

Introduction to Ip Telephony: Why and How Companies Are Upgrading Private Telephone Systems to Use Voip
Автор: Lawrence Harte
Оригинал издан: ????

«Introduction to Ip Telephony: Why and How Companies Are Upgrading Private Telephone Systems to Use Voip»книга ???? года.

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«This «Introduction to IP Telephony» book explains why companies are converting some or all of their telephone systems from dedicated telephone systems (such as PBX) to more standard IP telephony systems. These conversions allow for telephone bill…»

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