CCNA Voice Official Exam Certification Guide (640-460 IIUC)
Jeremy D. Cioara,CCIE No. 11727, works in many facets of the Cisco networking realm. As an author, he has written multiple books for Cisco Press and Exam Cram. As aninstructor, he teaches at Interface Technical Training  in Phoenix, Arizona. Likewise, Jeremy has recorded many E-Learning titles at CBTNuggets. Finally, Jeremy is the CIO of AdTEC Networks and worksas a network consultant focusing on Cisco network and Voice over IP (VoIP) implementations. Jeremy also runs the Cisco Blog (http://www.ciscoblog.com) in his “free time.” Michael J. Cavanaugh,CCIE No. 4516 (Routing & Switching, Voice) and MCSE +Messaging, has been in the networking industry for more than 22 years. His employmentwith companies such as Wachovia, General Electric, Cisco Systems, Inc., BellSouth Communication Systems, and AT&T Communication Systems has allowed him to stay at the forefront of technology and hold leading-edge certifications. He has spent the last eight years focused on Cisco Unified Communications design, professional services, consulting, and support. Michael’s passion is learning the practical applications of new technologies and sharing knowledge with fellow engineers. Kris A. Krake,CCIE No. 10229 (Routing & Switching, Voice), is a Unified Communications Systems Engineer for Cisco Systems. Kris has consulted in the networking arena for more than 13 years and has spent over half of that time focused on Unified Communications. His employment with an Internet service provider and companies such as Aegon USA, BellSouth Communication Systems, and Cisco Systems has given him the opportunity to design, implement, and support a vast array of networks and telecommunications systems that range in size from small business to the globally reaching systems of the Fortune 50.