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CCVP TUC Quick Reference Sheets by David McDaniel

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Chapter 2. Cisco Unified CallManager Related Issues

Common Endpoint Registration Issues

Endpoint registration issues are some of the most common issues you will face when troubleshooting Cisco Unified CallManager. Many issues can prevent IP Phones from registering correctly, including network connectivity, IP Phone settings, DHCP settings, and Cisco Unified CallManager configuration settings.

Network Connectivity

Phone Initialization Process

When a phone initializes to a Cisco Unified CallManager server, it must go through many steps before it will actually register. Figure 2-1 shows these steps.

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Figure 2-1. SCCP Phone Initialization Procedure ...

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