Verifying That The Phones Have Not Been Intentionally Reset; Eliminating Dns Or Other Connectivity Errors - Cisco 7902G Administration Manual

Cisco Unified IP Phone Resets Unexpectedly

Verifying that the Phones Have Not Been Intentionally Reset

Eliminating DNS or Other Connectivity Errors

Step 1
Step 2
Step 3
Step 4
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SCCP), Cisco Unified IP Phones
7-10
Isolating the phones on a separate auxiliary VLAN increases the quality of the
voice traffic. See the "Understanding How the Cisco Unified IP Phone Interacts
with the Cisco Catalyst Family of Switches" section on page 2-3
If you are not the only administrator with access to Cisco Unified CallManager,
you should verify that no one else has intentionally reset the phones.
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
Cisco Unified IP Phone" section on page 7-15
Modify DHCP and IP settings:
Disable DHCP. See the
a.
details.
Assign static IP values to the phone. See the
b.
section on page 4-20
other functioning Cisco Unified IP Phones.
Assign a TFTP server. See the
c.
page 4-31 for details. Use the same TFTP server used for other functioning
Cisco Unified IP Phones.
On the Cisco Unified CallManager server, verify that the local host files have the
correct Cisco Unified CallManager server name mapped to the correct IP address.
From Cisco Unified CallManager, choose System > Server and verify that the
server is referred to by its IP address and not by its host name.
Chapter 7 Troubleshooting the Cisco Unified IP Phone
"Resetting the
for details.
"Modifying DHCP Settings" section on page 4-15
for details. Use the same default router setting used for
"Configuring TFTP Options" section on
for details.
"Configuring IP Settings"
OL-8151-01
for