Cisco 7912G Administration Guide - Page 7
Troubleshooting the Cisco IP Phone, Checking the Light Indicators on a Cisco IP Phone 7902G - firmware
UPC - 746320852409
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Contents 6 C H A P T E R Troubleshooting the Cisco IP Phone 6-1 Obtaining Status, Model, and Version Information 6-2 Viewing Status Messages 6-2 Displaying Network Statistics 6-3 Verifying Model and Serial Number 6-5 Verifying Firmware Version 6-6 Monitoring Cisco IP Phones Remotely 6-7 Resetting the Cisco IP Phone 6-8 Erasing the Local Configuration 6-8 Updating the Firmware Version 6-10 Checking the Light Indicators on a Cisco IP Phone 7902G 6-11 Resolving Startup Problems 6-12 Symptom: Cisco IP Phone Does Not Start Up 6-12 Symptom: Cisco IP Phone Not Registering with Cisco CallManager 6-13 Registering the Phone with Cisco CallManager 6-14 Checking Network Connectivity 6-14 Verifying TFTP Server Settings 6-15 Verifying IP Addressing and Routing 6-15 Verifying DNS Settings 6-16 Verifying Cisco CallManager Settings 6-16 Cisco CallManager and TFTP Services Are Not Running 6-16 Creating a New Configuration File 6-17 Symptom: Cisco IP Phone Resetting 6-18 Verifying Physical Connection 6-19 Identifying Intermittent Network Outages 6-19 Verifying DHCP Settings 6-19 Checking Static IP Address Settings 6-19 Verifying Voice VLAN Configuration 6-20 Verifying that the Phones Have Not Been Intentionally Reset 6-20 Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G OL-6313-01 vii