Refer to the following recommended sources for further information about the topics covered in this chapter:
Voice Over IP Fundamentals , by JonathanDavidson and JamesPeters, Cisco Press, ISBN
Cisco Voice Over Frame Relay, ATM, and IP , by McQuerry, McGrew, and Foy, Cisco Press, ISBN
Cisco Interactive Mentor, Voice Internetworking: Basic Voice Over IP , Cisco Press, ISBN
Cisco CallManager Fundamentals: A Cisco AVVID Solution , by Alexander, Pearce, Smith, and Whetton, Cisco Press, ISBN
Deploying Cisco Voice Over IP Solutions , by JonathanDavidson, Cisco Press, ISBN
Integrating Voice and Data Networks , by ScottKeagy, Cisco Press, ISBN