7-11
Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
OL-14029-01
Chapter 7 Troubleshooting and Maintenance
Cisco Unified IP Phone Resets Unexpectedly
Eliminating DNS or Other Connectivity Errors
If the phone continues to reset, follow these steps to eliminate DNS or other
connectivity errors:
Procedure
Step 1
Reset the phone to factory defaults. See the
“Resolving Startup Problems” section
on page 7-1
for details.
Step 2
Modify DHCP and IP settings:
a.
Disable DHCP. See the
“Configuring Network Settings” section on page 4-3
for instructions.
b.
Assign static IP values to the phone. See the
“Configuring Network Settings”
section on page 4-3
for instructions. Use the same default router setting used
for other functioning Cisco Unified IP Phones.
c.
Assign a TFTP server. See the
“Configuring Network Settings” section on
page 4-3
for instructions. Use the same TFTP server used for other
functioning Cisco Unified IP Phones.
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 the server is referred to by its IP address and not by its DNS name.
Step 5
From Cisco Unified Communications Manager, choose
Device > Phone > Find
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
“Determining the MAC Address for a Cisco Unified IP Phone” section on
page 2-12
.
Содержание 3911
Страница 4: ......
