Chapter9 Troubleshooting and Maintenance
CiscoUnified IP Phone Resets Unexpectedly
9-10
Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager
OL-10008-01
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 “Network Configuration Menu” section on page4-7 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 CiscoUnified CallManager,
you should verify that no one else has intentionally reset the phones.
You can check whether a CiscoUnified IP Phone received a command from
Cisco Unified CallManager to reset by pressing the Applications Menu button on
the phone and choosing Settings > 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 CallManager administration.
•Reset-Restart—Phone closed due to receiving a Reset/Restart from
Cisco Unified CallManager administration.