THE FOLLOWING CCNA VOICE EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:
Describe the components of the Cisco Unified Communications Architecture.
Describe how the Unified Communications components work together to create the Cisco Unified Communications Architecture.
Describe the function of Contact Center in a UC environment.
Describe VoIP components and technologies.
Describe RTP and RTCP.
Describe the function of and differences between codecs.
Describe H.323, MGCP, SIP, and SCCP signaling protocols.
Describe gateways, and dial peers to connect to the PSTN and service provider networks.
Describe the function and application of voice gateways.
Describe the function and operation of call legs.
Describe voice dial peers.