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Chapter 9 Troubleshooting and Maintenance
Resolving Startup Problems
9-8
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1
OL-14587-01
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 are still assigned to
the phone in the Cisco
Unified Communications Manager database, but there
is no button on the phone with which calls can be answered. These directory
numbers should be removed from the phone and deleted if necessary.
Registering the Phone with Cisco Unified Communications Manager
A Cisco Unified IP Phone can register with a Cisco Unified Communications
Manager server only if the phone has been added to the server or if
auto-registration is enabled. Review the information and procedures in the
Adding Phones to the Cisco Unified Communications Manager Database”
section on page 2-11 to ensure that the phone has been added to the
Cisco Unified Communications Manager database.
To verify that the phone is in the Cisco Unified Communications Manager
database, choose Device > Phone > Find from Cisco
Unified Communications
Manager Administration to search for the phone based on its MAC Address. For
information about determining a MAC address, see the
“Determining the MAC
Address of a Cisco Unified IP Phone” section on page 2-15.
If the phone is already in the Cisco Unified Communications Manager database,
its configuration file may be damaged. See the
“Creating a New Configuration
File” section on page 9-7 for assistance.
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address
If a phone is unable to obtain an IP address when it starts up, the phone may be
not be on the same network or VLAN as the DHCP server, or the switch port to
which the phone is connected may be disabled.
Make sure that the network or VLAN to which the phone is connected has access
to the DHCP server, and make sure that the switch port is enabled.
218


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