Chapter 7 Troubleshooting and Maintenance
Cisco Unified IP Phone Resets Unexpectedly
7-10
Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
OL-14029-01
Checking Static IP Address Settings
If the phone has been assigned a static IP address, verify that you have entered the
correct settings. See the
“Configuring Network Settings” section on page 4-3
for
more information.
Verifying Voice VLAN Configuration
If the Cisco Unified IP Phone appears to reset during heavy network usage (for
example, following extensive web surfing on a computer connected to same
switch as phone), it is likely that you do not have a voice VLAN configured.
Isolating the phones on a separate auxiliary VLAN increases the quality of the
voice traffic.
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 your phone received a command from Cisco Unified
Communications Managerr 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.
Summary of Contents for 3911
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