Eliminating Dns Or Other Connectivity Errors - Cisco 7960G Administration Manual

Chapter 8 Troubleshooting the Cisco IP Phone

Eliminating DNS or Other Connectivity Errors

Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Cisco IP Phone Administration Guide for Cisco CallManager 4.0, Cisco IP Phones 7960G/7940G
OL-4825-01
If the phone continues to reset, follow these steps to eliminate DNS or other
connectivity errors:
Procedure
Reset the phone to factory defaults. See the
on page 8-2 for details.
Modify DHCP and IP settings.
Disable DHCP. See the
a.
page 4-6 for instructions.
Assign static IP values to the phone. See the
b.
Options" section on page 4-6
setting used for other functioning Cisco IP Phones.
Assign a TFTP server. See the
c.
section on page 4-6
functioning Cisco IP Phones.
On the Cisco CallManager server, verify that the local host files have the correct
Cisco CallManager server name mapped to the correct IP address. Refer to
Configuring The IP Hosts File on a Windows 2000 CallManager Server, available
at this URL:
http://www.cisco.com/warp/customer/788/AVVID/cm_hosts_file.html
From Cisco CallManager, choose System > Server and verify that the server is
referred to by its IP address and not by its DNS name.
From Cisco CallManager, choose Device > Phone and verify that you have
assigned the correct MAC address to this Cisco IP Phone. To verify the MAC
address on the phone, press the Settings button on the phone, choose Network
Configuration, and scroll to the MAC address option.
Power cycle the phone.
"Resolving Startup Problems" section
"Network Configuration Menu Options" section on
for instructions. Use the same default router
"Network Configuration Menu Options"
for instructions. Use the same TFTP server used for other
Resolving Startup Problems
"Network Configuration Menu
8-11