Cisco CVOICE 8.0: Voice Port Implementation, Codecs, and DSPs

The target audience for this course is established IT professionals with a solid, existing background in Cisco and networking technologies.

Prerequisite
Please contact us for information about prerequisites.

Expected Duration
210 minutes

Description
Connecting voice devices to a network infrastructure requires an in-depth understanding of the signaling and characteristics that are specific to each type of interface. Digital trunks are used to connect to the public switched telephone network (PSTN), to a PBX, or to the WAN, and are widely available worldwide. This course maps out analog and digital interfaces; examines analog voice ports, analog signaling, and configuration parameters for analog voice ports; and explains how to implement and verify digital trunks.
The course also explains the compression schemes that you can use to transport voice using various coder-decoders (codecs), and the implications of these compression schemes on bandwidth usage. How to calculate the amount of bandwidth that a VoIP call will consume is also explained. Finally, the course discusses the digital signal processors (DSPs) that convert analog and digital voice signals into VoIP traffic.

Objective

Configuring Gateway Voice Ports

  • recognize how the various types of analog and digital voice port interfaces are used in enterprise scenarios
  • identify the characteristics of analog voice ports
  • recognize how to configure analog voice ports
  • recognize the features of T1 CAS
  • identify the features of ISDN
  • recognize how to configure T1 and E1 trunks to the PSTN
  • identify the steps in configuring ISDN PRI and BRI trunks
  • Verifying Gateway Voice Ports

  • identify how to fine-tune the analog and digital voice ports
  • identify how echo is generated in a telephone conversation and how the echo cancellation feature works
  • identify the commands used to verify analog and digital voice port configuration
  • configure voice ports
  • Understanding DSP Functionality, Codecs, and Codec Complexity

  • match the major voice codecs with their features
  • recognize how voice quality evaluation methods are applied with voice codecs
  • recognize how the packet rate and protocol overhead impacts the total per-call bandwidth
  • identify the functions of digital signal processors
  • distinguish between DSP modules
  • recognize the recommended codec choice in the various gateway deployment models
  • recognize how to configure a DSP for voice termination at a voice gateway
  • identify the commands used to verify DSPs
  • MONTHLY SUBSCRIPTION

    $129/month
     

    ANNUAL SUBSCRIPTION

    $1295/year

    Multi-license discounts available for Annual and Monthly subscriptions.