Eliminating Dns Or Other Connectivity Errors - Cisco 7970G - IP Phone VoIP Administration Manual

Chapter 9 Troubleshooting and Maintenance

Eliminating DNS or Other Connectivity Errors

Step 1
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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
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If the phone continues to reset, follow these steps to eliminate DNS or other
connectivity errors:
Procedure
Use the Erase softkey to reset phone settings to their default values. See the
"Resetting or Restoring the Cisco Unified IP Phone" section on page 9-19
details.
Modify DHCP and IP settings:
Disable DHCP. See the
a.
for instructions.
Assign static IP values to the phone. See the
b.
section on page 4-7
for other functioning Cisco Unified IP Phones.
Assign TFTP server. See the
c.
page 4-7 for instructions. Use the same TFTP server used for other
functioning Cisco Unified IP Phones.
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.
From Cisco Unified Communications Manager, choose System > Server and
verify that the server is referred to by its IP address and not by its DNS name.
From Cisco Unified Communications Manager, choose Device > Phone and
verify that you have assigned the correct MAC address to this Cisco Unified IP
Phone. For information about determining a MAC address, see the
the MAC Address of a Cisco Unified IP Phone" section on page
Power cycle the phone.
Cisco Unified IP Phone Resets Unexpectedly
"Network Configuration Menu" section on page 4-7
for instructions. Use the same default router setting used
"Network Configuration Menu" section on
"Network Configuration Menu"
"Determining
2-20.
for
9-11