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PBX Systems for IP Telephony by Allan Sulkin (2002, Trade Paperback)

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£72.07

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Product Description : PBX Systems for IP Telephony This work explains telephone switching systems and how the technology is evolving to accommodate voiceoverIP traffic Unlike data networks telephone networks are proprietary Theyre purchased as complete systems and are hard if not impossible to modify Allan Sulkin explains how to acquire deploy and maintain a system with all the features needed to support essential new applications and how to get optimal performance from the system you have(IT'S AN USED PRODUCT)