Cisco 7965G Administration Guide

9-8
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12650-01
Chapter 9 Troubleshooting and Maintenance
Cisco Unified IP Phone Resets Unexpectedly
Verifying that the Phones Have Not Been Intentionally Reset
If you are not the only administrator with access to Cisco Unified Communications Manager, you should
verify that no one else has intentionally reset the phones.
You can check whether a Cisco Unified IP Phone received a command from
Cisco
Unified Communications Manager to reset by pressing the Settings button on the phone and
choosing Status > Network Statistics. If the phone was recently reset one of these messages appears:
• Reset-Reset—Phone closed due to receiving a Reset/Reset from Cisco Unified Communications
Manager Administration.
• Reset-Restart—Phone closed due to receiving a Reset/Restart from Cisco Unified Communications
Manager Administration.
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 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 9-15 for details.
Step 2 Modify DHCP and IP settings:
a. Disable DHCP. See the “Network Configuration Menu” section on page 4-5 for instructions.
b. Assign static IP values to the phone. See the “Network Configuration Menu” section on page 4-5
for instructions. Use the same default router setting used for other functioning Cisco Unified IP
Phones.
c. Assign TFTP server. See the “Network Configuration Menu” section on page 4-5 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 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 of a Cisco Unified IP Phone” section on
page 2-13.
Step 6 Power cycle the phone.
Checking Power Connection
In most cases, a phone will restart if it powers up using external power but loses that connection and
switches to PoE. Similarly, a phone may restart if it powers up using PoE and then gets connected to an
external power supply.

Cisco 7965G Specifications

General

Brand	Cisco
Model	7965G
Category	IP Phone
Language	English