Cisco CP-7942G Administration Guide - Page 9
Troubleshooting and Maintenance - reset
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Contents 9 C H A P T E R OL-15483-01 Network Statistics 8-9 Device Logs 8-11 Streaming Statistics 8-11 Troubleshooting and Maintenance 9-1 Resolving Startup Problems 9-1 Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process 9-2 Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications Manager 9-2 Identifying Error Messages 9-3 Checking Network Connectivity 9-3 Verifying TFTP Server Settings 9-3 Verifying IP Addressing and Routing 9-3 Verifying DNS Settings 9-4 Verifying Cisco Unified Communications Manager Settings 9-4 Cisco CallManager and TFTP Services Are Not Running 9-4 Creating a New Configuration File 9-5 Registering the Phone with Cisco Unified Communications Manager 9-5 Symptom: Cisco Unified IP Phone Unable to Obtain IP Address 9-6 Cisco Unified IP Phone Resets Unexpectedly 9-6 Verifying the Physical Connection 9-6 Identifying Intermittent Network Outages 9-6 Verifying DHCP Settings 9-7 Checking Static IP Address Settings 9-7 Verifying the Voice VLAN Configuration 9-7 Verifying that the Phones Have Not Been Intentionally Reset 9-7 Eliminating DNS or Other Connectivity Errors 9-7 Checking Power Connection 9-8 Troubleshooting Cisco Unified IP Phone Security 9-8 General Troubleshooting Tips 9-9 General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module 9-12 Resetting or Restoring the Cisco Unified IP Phone 9-13 Performing a Basic Reset 9-13 Performing a Factory Reset 9-14 Using the Quality Report Tool 9-14 Monitoring the Voice Quality of Calls 9-15 Using Voice Quality Metrics 9-15 Troubleshooting Tips 9-16 Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 7.0 ix