Manager; C H A P T E R 9 Troubleshooting And Maintenance; Identifying Error Messages; Checking Network Connectivity - Cisco 6921 - Unified IP Phone Standard VoIP Administration Manual

Chapter 9 Troubleshooting and Maintenance
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In addition, problems with security may prevent the phone from starting up properly. See the
Troubleshooting Tips" section on page 9-8

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 Applications
button, then selecting Admin Settings > Network Configuration > IPv4 > TFTP Server 1.
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
page 4-4

Verifying IP Addressing and Routing

You should verify the IP addressing and routing settings on the phone. If you are using DHCP, the DHCP
server should provide these values. If you have assigned a static IP address to the phone, you must enter
these values manually.
On the Cisco Unified IP Phone, press the Applications button, then select Administrator Settings >
Network Configuration > IPv4, and look at the following options:
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Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Verifying DNS Settings, page 9-4
Cisco CallManager and TFTP Services Are Not Running, page 9-4
Creating a New Configuration File, page 9-4
Checking Network Connectivity, page 9-3
"Network Setup Menu" section on page
for instructions.
Boot/DHCP Server—If you have assigned a static IP address to the phone, you do not need to enter
a value for the DHCP Server option. However, if you are using a DHCP server, this option must have
a value. If it does not, check your IP routing and VLAN configuration. Refer to the Troubleshooting
Switch Port and Interface Problems document, available at this URL:
http://www.cisco.com/en/US/customer/products/hw/switches/ps700/products_tech_note09186a00
8015bfd6.shtml
IP Address, Subnet Mask, Default Router—If you have assigned a static IP address to the phone,
you must manually enter settings for these options. See the
page 4-4 for instructions.
for more information.
"Status Messages Screen" section on page 7-2
4-4.
"Network Setup Menu" section on
"Network Setup Menu" section on
Resolving Startup Problems
"General
9-3