Implementing Cisco Unified Communications Voice over IP and QoS v8.0 CVOICE

Course Specifications


Exam number: 642-437
Course length: 5 days

Course Description

Implementing Cisco Voice Communications and QoS (CVOICE) v8.0 teaches learners about voice gateways, characteristics of VoIP call legs, dial plans and their implementation, basic implementation of IP phones in a Cisco Unified Communications Manager Express environment, and essential information about gatekeepers and Cisco Unified Border Element. The course provides learners with voice-related quality of service (QoS) mechanisms, which are required in Cisco Unified Communications networks.

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Target Student:  The following lists the skills and knowledge that learners must possess to benefit fully from this course. This also includes recommended Cisco learning offerings that learners should first complete before taking the course.

  • Working knowledge of fundamental terms and concepts of computer networking, including LANs, WANs, and IP switching and routing
  • Ability to configure and operate Cisco IOS routers in an IP environment at the Cisco CCNA Routing and Switching level
  • Basic knowledge of traditional voice, converged voice, and data networks at the Cisco CCNA Voice level
  • Cisco learning offerings:
    • Introducing Cisco Voice and Unified Communications Administration (ICOMM)


Performance-Based Objectives

  • Describe the characteristics and historical evolution of unified communications networks, the three operational modes of gateways, their functions, and the related call leg types; explain how gateways route calls and which configuration elements relate to incoming and outgoing call legs; describe how to connect a gateway to traditional voice circuits using analog and digital interfaces; define DSPs and codecs, and explain different codec complexities and their usage
  • Describe how VoIP signaling and media transmission differs from traditional voice circuits and explain how voice is sent over IP networks, including analog-to-digital conversion, encoding, packetization, and all variants of RTP; describe the characteristics of H.323, SIP, and MGCP, and explain when to use them; discuss special requirements for VoIP call legs, including the need for QoS, fax/modem relay, and DTMF support; describe how to configure VoIP call legs in a gateway
  • Describe the functions and operation of the Cisco Unified Communications Manager Express; describe all components that are required to support endpoints by Cisco Unified Communications Manager Express and explain how to configure them; describe Cisco Unified Communications Manager Express endpoint configuration elements such as phones and directory numbers
  • Describe the characteristics and requirements of a numbering plan; explain the components of a dial plan and their functions; describe how to configure a gateway for digit manipulation; explain how to configure a gateway to perform path selection; describe how to configure calling privileges on a voice gateway
  • Describe Cisco gatekeeper functions and configuration; explain Cisco Unified Border Element features and configuration
  • Explain the functions, goals, and implementation models of QoS, and what specific issues and requirements exist in a converged Cisco Unified Communications network; describe the characteristics and QoS mechanisms of the DiffServ model and contrast it to other models; explain the operation and configuration of the QoS classification and marking mechanism including the concept of trust boundaries and describe how LFI and cRTP provide link efficiency on WAN links and how they are configured; explain policing, shaping, and LLQ, their operations and configuration, using the MQC; describe how AutoQoS works and what it achieves in a Cisco Unified Communications network


Course Content

Lesson 1: Introduction to Voice Gateways
Topic 1A: Understanding Cisco Unified Communications Networks and the Role of Gateways
Topic 1B: Examining Gateway Call Routing and Call Legs
Topic 1C: Configuring Gateway Voice Ports
Topic 1D: Understanding DSP Functionality, Codecs, and Codec Complexity 
Lesson 2: VoIP Call Legs
Topic 2A: Examining VoIP Call Legs and VoIP Media Transmission
Topic 2B: Explaining H.323 Signaling Protocol
Topic 2C: Explaining SIP Signaling Protocol
Topic 2D: Explaining MGCP Signaling Protocol
Topic 2E: Describing Requirements for VoIP Call Legs
Topic 2F: Configuring VoIP Call Legs
Lesson 3: Cisco Unified Communications Manager Express Endpoints Implementation
Topic 3A: Introducing Cisco Unified Communications Manager Express
Topic 3B: Examining Cisco Unified Communications Manager Express Endpoint Requirements
Topic 3C: Configuring Cisco Unified Communications Manager Express Endpoints 
Lesson 4: Dial Plan Implementation
Topic 4A: Introducing Call Routing
Topic 4B: Understanding Dial Plans
Topic 4C: Describing Digit Manipulation
Topic 4D: Configuring Path Selection
Topic 4E: Configuring Calling Privileges
Lesson 5: Gatekeeper and Cisco Unified Border Element Implementation
Topic 5A: Understanding Gatekeepers
Topic 5B: Examining Cisco Unified Border Element
Lesson 6: Quality of Service
Topic 6A: Introducing QoS
Topic 6B: Understanding QoS Mechanisms and Models
Topic 6C: Explaining Classification, Marking, and Link Efficiency Mechanisms
Topic 6D: Managing Congestion and Rate Limiting
Topic 6E: Understanding Cisco AutoQoS
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