C H A P T E R 9 Troubleshooting And Maintenance; Manager; Identifying Error Messages; Checking Network Connectivity - Cisco 7975G Software Manual

Chapter 9 Troubleshooting and Maintenance
Symptom: The Cisco Unified IP Phone Does Not Register with Cisco
Unified Communications Manager
If the phone proceeds past the first stage of the startup process (LED buttons flashing on and off) but
continues to cycle through the messages displaying on the LCD screen, the phone is not starting up
properly. The phone cannot successfully start up unless it is connected to the Ethernet network and it
has registered with a Cisco Unified Communications Manager server.
These sections can assist you in determining the reason the phone is unable to start up properly:
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Identifying Error Messages

As the phone cycles through the startup process, you can access status messages that might provide you
with information about the cause of a problem. See the
for instructions about accessing status messages and for a list of potential errors, their explanations, and
their solutions.

Checking Network Connectivity

If the network is down between the phone and the TFTP server or Cisco Unified Communications
Manager, the phone cannot start up properly. Ensure that the network is currently running.

Verifying TFTP Server Settings

You can determine the IP address of the TFTP server used by the phone by pressing the Settings button
on the phone, choosing IPv4 > Network Configuration, and scrolling to the TFTP Server 1 option.
If you have assigned a static IP address to the phone, you must manually enter a setting for the TFTP
Server 1 option. See the
If you are using DHCP, the phone obtains the address for the TFTP server from the DHCP server. Check
the IP address configured in Option 150.
You can also enable the phone to use an alternate TFTP server. Such a setting is particularly useful if the
phone was recently moved from one location to another. See the
on page 4-5
Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 7.0 (SCCP and SIP)
OL-15790-01
Identifying Error Messages, page 9-3
Checking Network Connectivity, page 9-3
Verifying TFTP Server Settings, page 9-3
Verifying IP Addressing and Routing, page 9-4
Verifying DNS Settings, page 9-4
Verifying Cisco Unified Communications Manager Settings, page 9-4
Cisco CallManager and TFTP Services Are Not Running, page 9-4
Creating a New Configuration File, page 9-5
Registering the Phone with Cisco Unified Communications Manager, page 9-6
"Network Configuration Menu" section on page
for instructions.
Resolving Startup Problems
"Status Messages Screen" section on page 7-3
4-5.
"Network Configuration Menu" section
9-3