Daniel Collins & Richard Swale 
Carrier Grade Voice Over IP, Third Edition [EPUB ebook] 

Leading-edge Vo IP 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 Vo IP, 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 Qo S. This comprehensive guide offers start-to-finish details on carrier-grade Vo IP network design, troubleshooting, and interconnection. Coverage includes: HD voice services Internet, IP, and Vo IP standards Speech-coding techniques H.323 and multimedia conferencing SIP messages and architecture The SS7 protocol suite Interconnecting Vo IP networks Qo S policies and enforcement Security and privacy issues Vo IP network design