c) Assign a TFTP server. See Ethernet Setup menu, on page 104 for instructions. Use the same TFTP server
that other functioning Cisco Unified IP Phones use.
Step 3
On the Cisco Unified Communications Manager server, verify that the local host files have the correct Cisco
Unified Communications Manager server name mapped to the correct IP address.
Step 4
From Cisco Unified Communications Manager, choose System > Server and verify that reference to the
server is made by the IP address and not by the DNS name.
Step 5
From Cisco Unified Communications Manager, choose Device > Phone. Click Find to search for this phone.
Verify that you have assigned the correct MAC address to this Cisco Unified IP Phone. For information about
determining a MAC address, see Cisco Unified IP Phone MAC Address Determination, on page 52.
Step 6
Power cycle the phone.
Check DHCP settings
Procedure
Step 1
On the Cisco Unified IP Phone, press Applications.
Step 2
Select Administrator Settings > Network Setup > Ethernet Setup > IPv4 Setup, and look at the following
options:
•
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 no value is found, check your IP routing and VLAN configuration. See the Troubleshooting Switch
Port and Interface Problems document, available at this URL:
http://www.cisco.com/en/US/customer/products/hw/switches/ps708/prod_tech_notes_list.html
•
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 Ethernet Setup menu, on page 104 for instructions.
Step 3
If you are using DHCP, check the IP addresses that your DHCP server distributes.
See the Understanding and Troubleshooting DHCP in Catalyst Switch or Enterprise Networks document,
available at this URL:
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a00800f0804.shtml
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
(SIP)
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Troubleshooting and Maintenance
Troubleshooting procedures
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