Cisco 7942G Administration Guide

Contents
vii
Cisco Unified IP Phone 7962G and 7942G Administration Guide for Cisco Unified Communications Manager 6.1(3)
OL-17679-01
Disabling and Enabling Web Page Access 8-3
Device Information 8-4
Network Configuration 8-5
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

Cisco 7942G Specifications

General

Lines	2
Audio Codec Support	G.711, G.729a, G.729ab, G.722
Network Protocols	SIP, SCCP
Ethernet Ports	2 x 10/100
Power Options	PoE 802.3af, Optional Power Cube
Speakerphone	Yes
Headset Port	Yes
Weight	3.5 lbs