Cisco® certifications enhance your career path by:

  • Validating achievements, knowledge and hands-on skill base.
  • Increasing professional credibility.
  • Diversifying and heightening skills, ensuring the ability to tackle the newest, cutting-edge technologies.

Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)

The Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) 642-427 is the exam associated with the CCNP Voice certification. This exam tests a candidate's knowledge and skills required to troubleshoot Cisco Unified Communications systems and solutions in different deployments. In addition, the exams tests a candidates knowledge in troubleshooting methodology, triage, resources, tools, and fixes for Cisco Unified Communications Manager and the new v8.0 features such as Call Control Discovery, SIP Precondition, Extension Mobility Cross Cluster as well as dial plan troubleshooting including globalized call routing.


A Valid CVOICE / CCNA Voice


  • Apply the Cisco recommended methodology used to determine general Unified communications system problems and issues
  • Identify available tools to operate and troubleshoot a Unified Communications System
  • Troubleshoot registration issues
  • Troubleshoot call setup issues
  • Troubleshoot database issues
  • Troubleshoot call control discovery and Cisco Inter Company Media Exchange
  • Troubleshoot application issues
  • Troubleshoot media resources
  • Troubleshoot voice quality issues

The following are recommended to prepare TVOICE:

  • Troubleshooting CUCM 8
  • Troubleshooting Guide for Cisco Unity
  • CUCM Admin Guide
  • CUCM Dial Plan Deployment Guide
  • CUCM System Guide
  • CCNP Voice TVOICE Quick Reference Sheets
  • CCVP TUC Quick Reference Sheets

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