Cisco 8831 Administration Guide

Solution
Create a new configuration file. See Create new phone configuration file.
Cisco Unified Communications Manager phone registration
Problem
The conference phone is not registered with the Cisco Unified Communications Manager.
Solution
A conference phone can register with a Cisco Unified Communications Manager server only if the conference
phone has been added to the server or if autoregistration is enabled. Review the information and procedures
in the Cisco Unified Communications Manager IP Phone addition methods section to ensure that the conference
phone has been added to Cisco Unified Communications Manager.
To verify that the conference phone is in the Cisco Unified Communications Manager database, choose Device
> Phone from Cisco Unified Communications Manager Administration and search for the conference phone
based on its MAC Address. For information about determining a MAC address, see the Cisco Unified IP
Phone MAC address determination section.
If the conference phone is already in the Cisco Unified Communications Manager database, its configuration
file may be damaged. See the Configuration file corruption section for assistance.
Cisco Unified IP Conference Phone 8831 cannot obtain IP address
Problem
If a phone cannot obtain an IP address when it starts up, the phone may not be on the same network or VLAN
as the DHCP server, or the switch port to which the conference phone is connected may be disabled.
Solution
Ensure that the network or VLAN to which the phone connects has access to the DHCP server, and ensure
that the switch port is enabled.
Cisco Unified IP Conference Phone 8831 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 Communications Manager connection are stable, a
phone should not reset on its own.
Typically, a phone resets if it has problems connecting to the Ethernet network or to Cisco Unified
Communications Manager. These sections can help you identify the cause of a phone resetting in your network:
•
Physical connection problems, on page 127
•
Intermittent network outages, on page 127
•
DHCP setting errors, on page 127
•
Static IP address setting errors, on page 127
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager
9.0
126
Troubleshooting and maintenance
Cisco Unified IP Conference Phone 8831 cannot obtain IP address

Cisco 8831 Specifications

General

Brand	Cisco
Model	8831
Category	IP Phone
Language	English