Specifications
Table Of Contents
- Cisco Unified IP Phone Administration Guide for Cisco Unified CM 8.5 (SCCP and SIP)
- Contents
- Preface
- An Overview of the Cisco Unified IP Phone
- Understanding the Cisco Unified IP Phones 7975G, 7971G-GE, 7970G, 7965G, and 7945G
- What Networking Protocols are Used?
- What Features are Supported on the Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G?
- Understanding Security Features for Cisco Unified IP Phones
- Overview of Configuring and Installing Cisco Unified IP Phones
- Installing Cisco Unified IP Phones
- Preparing to Install the Cisco Unified IP Phone on Your Network
- Understanding Interactions with Other Cisco Unified IP Communications Products
- Providing Power to the Phone
- Understanding Phone Configuration Files
- Understanding the Phone Startup Process
- Adding Phones to the Cisco Unified Communications Manager Database
- Using Cisco Unified IP Phones with Different Protocols
- Determining the MAC Address of a Cisco Unified IP Phone
- Setting Up the Cisco Unified IP Phone
- Before You Begin
- Understanding the Cisco Unified IP Phone Components
- Installing the Cisco Unified IP Phone
- Attaching a Cisco Unified IP Phone Expansion Module
- Adjusting the Placement of the Cisco Unified IP Phone
- Verifying the Phone Startup Process
- Configuring Startup Network Settings
- Configuring Security on the Cisco Unified IP Phone
- Configuring Settings on the Cisco Unified IP Phone
- Configuration Menus on the Cisco Unified IP Phone
- Overview of Options Configurable from a Phone
- Network Configuration Menu
- Device Configuration Menu
- Unified CM Configuration
- SIP Configuration Menu for SIP Phones
- Call Preferences Menu for SIP Phones
- HTTP Configuration Menu
- Locale Configuration Menu
- UI Configuration Menu
- Media Configuration Menu
- Power Save Configuration Menu
- Ethernet Configuration Menu
- Security Configuration Menu
- QoS Configuration Menu
- Network Configuration
- Security Configuration Menu
- Configuring Features, Templates, Services, and Users
- Telephony Features Available for the Phone
- Configuring Product Specific Configuration Parameters
- Configuring Corporate and Personal Directories
- Modifying Phone Button Templates
- Configuring Softkey Templates
- Setting Up Services
- Adding Users to Cisco Unified Communications Manager
- Managing the User Options Web Pages
- Customizing the Cisco Unified IP Phone
- Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
- Monitoring the Cisco Unified IP Phone Remotely
- Troubleshooting and Maintenance
- Resolving Startup Problems
- Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process
- Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications Manager
- Identifying Error Messages
- Checking Network Connectivity
- Verifying TFTP Server Settings
- Verifying IP Addressing and Routing
- Verifying DNS Settings
- Verifying Cisco Unified Communications Manager Settings
- Cisco CallManager and TFTP Services Are Not Running
- Creating a New Configuration File
- Registering the Phone with Cisco Unified Communications Manager
- Symptom: Cisco Unified IP Phone Unable to Obtain IP Address
- Cisco Unified IP Phone Resets Unexpectedly
- Troubleshooting Cisco Unified IP Phone Security
- General Troubleshooting Tips
- General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module
- Resetting or Restoring the Cisco Unified IP Phone
- Using the Quality Report Tool
- Monitoring the Voice Quality of Calls
- Where to Go for More Troubleshooting Information
- Cleaning the Cisco Unified IP Phone
- Resolving Startup Problems
- Providing Information to Users Via a Website
- How Users Obtain Support for the Cisco Unified IP Phone
- Giving Users Access to the User Options Web Pages
- How Users Access the Online Help System on the Phone
- How Users Get Copies of Cisco Unified IP Phone Manuals
- Accessing Cisco 7900 Series Unified IP Phone eLearning Tutorials (SCCP Phones Only)
- How Users Subscribe to Services and Configure Phone Features
- How Users Access a Voice-Messaging System
- How Users Configure Personal Directory Entries
- Feature Support by Protocol for the Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G
- Supporting International Users
- Technical Specifications
- Basic Phone Administration Steps
- Index
9-12
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.5
OL-23092-01
Chapter 9 Troubleshooting and Maintenance
General Troubleshooting Tips
Loopback condition A loopback condition can occur when the following conditions are
met:
• The SW Port Configuration option in the Network
Configuration menu on the phone is set to 10 Half
(10-BaseT/half duplex)
• The phone receives power from an external power supply
• The phone is powered down (the power supply is disconnected)
In this case, the switch port on the phone can become disabled and
the following message will appear in the switch console log:
HALF_DUX_COLLISION_EXCEED_THRESHOLD
To resolve this problem, re-enable the port from the switch.
One-way audio When at least one person in a call does not receive audio, IP
connectivity between phones is not established. Check the
configurations in routers and switches to ensure that IP connectivity
is properly configures.
Peer to peer image distribution
fails.
If the peer to peer image distribution fails, the phone will default to
using the TFTP server to download firmware. Access the log
messages stored on the remote logging machine to help debug the
peer to peer image distribution feature.
Note These log messages are different than the log messages sent
to the phone log.
Cisco VT Advantage/ Unified
Video Advantage (CVTA)
If you are having problems getting CVTA to work, make sure that
the PC Port is enabled, and that CDP is enabled on the PC port.
Table 9-2 Cisco Unified IP Phone Troubleshooting (continued)
Summary Explanation