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Leading-edge VoIP technologies, tools, and standards. Efficiently deliver voice, data, and multimedia content over today's always-on broadband networks with guidance from this fully updated resource. Carrier-Grade VoIP, Third Edition, shows how to set up and administer a highly reliable, unified communications platform using the latest tools. Find out how to choose from the complete spectrum of codecs, enable new HD voice and video services, handle security, and maintain optimal QoS. This comprehensive guide offers start-to-finish details on carrier-grade VoIP network design, troubleshooting, and interconnection.