Exam Number: 642-437 CVOICE
Associated Certifications: CCNP Voice (formerly known as CCVP)
Cisco Rich Media Communications Specialist
Duration: 90 minutes (60 - 70 questions)
Describe a dial plan
- Describe a numbering plan
- Describe digit manipulation
- Describe path selection
- Describe calling privileges
Describe the basic operation and components involved in a VoIP call
- Describe VoIP call flows
- Describe RTP, RTCP, cRTP, and sRTP
- Describe H.323
- Describe MGCP
- Describe Skinny Call Control Protocol
- Describe SIP
- Identify the appropriate gateway signaling protocol for a given scenario
- Choose the appropriate codec for a given scenario
- Describe and Configure VLANs
Implement Cisco Unified Communications Manager Express to support endpoints using CLI
- Describe the appropriate software components needed to support endpoints
- Configure DHCP, NTP and TFTP
- Describe the differences between the different types of ephones and ephone-dns
- Configure Cisco Unified Communications Manager Express endpoints
Describe the components of a gateway
- Describe the function of gateways
- Describe DSP functionality
- Describe the different types of voice ports and their usage
- Describe dial peers and the gateway call routing process
- Describe codecs and codec complexity
Implement a gateway
- Configure analog voice ports
- Configure digital voice ports
- Configure dial-peers
- Configure digit manipulation
- Configure calling privileges
- Verify dial-plan implementation
- Implement fax support on a gateway
Implement Cisco Unified Border Element
- Describe the Cisco Unified Border Element features and functionality
- Configure Cisco Unified Border Element to provide address hiding
- Configure Cisco Unified Border Element to provide protocol and media interworking
- Configure Cisco Unified Border Element to provide call admission control
- Verify Cisco Unified Border Element configuration and operation
Describe the need to implement QoS for voice and video
- Describe causes of voice and video quality issues
- Describe how to resolve voice and video quality issues
- Describe QoS requirements for voice and video traffic
Describe and configure the DiffServ QoS model
- Describe the DiffServ QoS model
- Describe marking based on CoS, DSCP, and IP Precedence
- Configure layer 2 to layer 3 QoS mapping
- Describe trust boundaries
- Configure trust boundary on Cisco switches
- Describe the operations of the QoS classifications and marking mechanisms
- Describe Low Latency Queuing
- Describe the operations of the QoS WAN Link Efficiency mechanisms
- Enable QoS mechanisms on switches using AutoQoS
- Configure Low Latency Queuing
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