Cisco CP-7942G User Manual

Contents
ix
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 7.0
OL-15483-01
Network Statistics 8-9
Device Logs 8-11
Streaming Statistics 8-11
CHAPTER 9 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 CP-7942G Specifications

General

Brand	Cisco
Model	CP-7942G
Category	IP Phone
Language	English