Lesson 4: Cisco IP Telephony – Troubleshooting Calls, Media, Applications, and Integrations

This lesson provides guided coverage of troubleshooting calls, media, applications, and integrations within the Cisco IP Telephony Training.

Topics Covered

• Registration, signaling, dial plan, trunk, gateway, and routing failures
• One-way audio, no audio, codec, NAT, firewall, QoS, and media problems
• Webex, contact center, messaging, conferencing, and integration issues
• Logs, traces, packet captures, call analysis, and root-cause workflow
• High availability, recovery, migration, rollback, and change validation
• Documentation, support evidence, and operational handover
• Collaboration troubleshooting capstone

Practical Outcome

Learners complete the lesson with a clear understanding of the workflow, the ability to validate the expected result, and a structured approach to common troubleshooting tasks.