9-8
Cisco Unified IP Video Phone 7985G Administration Guide
OL-8726-02
Chapter 9 Troubleshooting and Maintenance
Resolving Startup Problems
Note
•
When you remove a phone from the Cisco Unified CallManager database, its
configuration file gets deleted from the Cisco Unified CallManager TFTP
server. The phone directory number or numbers remain in the Cisco Unified
CallManager database. You can use these “unassigned DNs” for other
devices. If other devices are not using these unassigned DNs, delete them
from the Cisco Unified CallManager database. You can use the Route Plan
Report to view and delete unassigned reference numbers. Refer to
Cisco
Unified CallManager Administration Guide
for more information.
•
Changing the buttons on a phone button template, or assigning a different
phone button template to a phone, may result in directory numbers that are no
longer accessible from the phone. The directory numbers remain assigned to
the phone in the Cisco Unified CallManager database, but no button exists on
the phone with which calls can be answered. Remove these directory numbers
from the phone and delete them if necessary.
Symptom: Cisco Unified IP Video Phone Resets Unexpectedly
If users report that their phones are resetting during calls or while idle on their
desk, you should investigate the cause. If the network connection and Cisco
Unified CallManager connection are stable, a Cisco Unified IP Video Phone
should not reset on its own.
Typically, a phone resets if it has problems connecting to the Ethernet network or
to Cisco Unified CallManager. These sections can help you identify the cause of
a resetting phone in your network:
•
Verifying Physical Connection, page 9-9
•
Identifying Intermittent Network Outages, page 9-9
•
Verifying DHCP Settings, page 9-9
•
Checking Static IP Address Settings, page 9-9
•
Verifying Voice VLAN Configuration, page 9-10
•
Eliminating DNS or Other Connectivity Errors, page 9-10
