Designing for Optimal Voice Quality

This course is included in our On-demand training solution.


To identify voice quality issues in IP networks and recognize how to improve voice quality by implementing QoS

Target Audience

IT professionals responsible for preparing, configuring, and maintaining a voice and data network; candidates preparing for the Cisco Certified Voice Professional certification (CVOICE 642-432)


Working knowledge of LANs, WANs, and IP switching and routing; an understanding of traditional public switched telephone network operations and technologies; internetworking skills covered in the Interconnecting Cisco Network Devices (ICND) course; Cisco Voice Fundamentals (CVF) v1.0 e-learning course completion

Expected Duration

95 min.

Course Objectives

Designing for Optimal Voice Quality

  • identify the factors present in IP networks that affect audio clarity.
  • identify the problems presented by jitter, delay, and packet loss in an IP network, and recognize how Cisco deals with each of these problems.
  • distinguish between voice quality measurement standards and recognize why PESQ is the preferred method of testing voice quality in VoIP networks.
  • recognize the objectives of QoS and identify the network areas in which QoS is used to improve voice quality in Cisco networks.
  • identify the characteristics of a poorly designed network, and list the QoS deployment and configuration tasks automated by Cisco AutoQoS.
  • configure AutoQoS in a given network scenario.