Filter
Top Products
9-5
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Chapter 9 Troubleshooting and Maintenance
Resolving Startup Problems
Procedure
Step 1 From Cisco Unified Communications Manager, choose Device > Phone > Find to locate the phone
experiencing problems.
Step 2 Choose Delete to remove the phone from the Cisco Unified Communications Manager database.
Step 3 Add the phone back to the Cisco Unified Communications Manager database. See the “Adding Phones
to the Cisco Unified Communications Man
ager Database” section on page 2-7 for details.
Step 4 Power cycle the phone.
Note • When you remove a phone from the Cisco Unified Communications Manager database, its
configuration file is deleted from the Cisco Unified Communications Manager TFTP server. The
p
hone’s directory number or numbers remain in the Cisco Unified Communications Manager
da
tabase. They are called “unassigned DNs” and can be used for other devices. If unassigned DNs
are not used by other devices, delete them from the Cisco Unified Communications Manager
da
tabase. You can use the Route Plan Report to view and delete unassigned reference numbers.
Refer to Cisco Unified Communications Manager Administration Guide f
or 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 are still assigned to the phone in the Cisco Unified Communications Manager database, but
th
ere 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 and if there are sufficient number
of unit licenses. Review the information and procedures in the “Adding Phones to the Cisco Unified
Communications Manager Database” section on page 2-7 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 Devi
ce >
Phone > Find from Cisco Unified Communications Manager Administration to search for the phone
b
ased on its MAC Address. For information about determining a MAC address, see the “Determining
the MAC Address for a Cisco Unified IP Phone” section on page 2-10.
If the phone is already in the Cisco Unified Communications Manager database, its configuration file
m
ay be damaged. See the “Creating a New Configuration File” s
ection on page 9-4 for assistance.
For more information on licensing go to the Licenses for Phone
s section in the Cisco Unified
Communications Manager System Guide
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.