Cisco Voice over IP (CVOICE) (Authorized Self-Study Guide) (3rd Edition) Reviews

Cisco Voice over IP (CVOICE) (Authorized Self-Study Guide) (3rd Edition)

• ISBN13: 9781587055546
• Condition: New
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Authorized Self-Study Guide Cisco Voice over IP (CVOICE) Third Edition   Foundation learning for CVOICE exam 642-436   Kevin Wallace, CCIE No. 7945   Cisco Voice over IP (CVOICE), Third Edition, is a Cisco-authorized, self-paced learning tool for CCVP foundation learning. This book provides you with the knowledge and skills required to plan, design, and deploy a Cisco voice-over-IP (VoIP) network and to integrate gateways and gatekeepers into an enterprise VoIP network. By reading thi

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Hacking VoIP

Voice over Internet Protocol (VoIP) networks have freed users from the tyranny of big telecom, allowing people to make phone calls over the Internet at very low or no cost. But while VoIP is easy and cheap, it’s notoriously lacking in security. With minimal effort, hackers can eavesdrop on conversations, disrupt phone calls, change caller IDs, insert unwanted audio into existing phone calls, and access sensitive information.Hacking VoIP takes a dual approach to VoIP security, explaining its many

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