Obtaining Additional Information About Power; Understanding Phone Configuration Files - Cisco 6921 - Unified IP Phone Standard VoIP Administration Manual

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network

Obtaining Additional Information about Power

For related information about power, refer to the documents shown in
provide information about the following topics:
•
•
•
Table 2-2
Document Topics
Cisco Unified IP Phone Power
Injector
PoE Solutions
Cisco Catalyst Switches
Integrated Service Routers
Cisco IOS Software

Understanding Phone Configuration Files

Configuration files for a phone are stored on the TFTP server and define parameters for connecting to
Cisco Unified Communications Manager. In general, any time you make a change in Cisco Unified
Communications Manager that requires the phone to be reset, a change is automatically made to the
phone's configuration file.
Configuration files also contain information about which image load the phone should be running. If this
image load differs from the one currently loaded on a phone, the phone contacts the TFTP server to
request the required load files.
A phone accesses a default configuration file named XmlDefault.cnf.xml from the TFTP server when
the following conditions exist:
•
•
•
If auto registration is not enabled and the phone has not been added to the Cisco Unified
Communications Manager database, the phone registration request will be rejected and display a blank
screen.
If the phone has registered before, the phone will access the configuration file named
SEPmac_address.cnf.xml, where mac_address is the MAC address of the phone.
The filenames are derived from the MAC address and description fields in the Phone Configuration
window of Cisco Unified Communications Manager Administration. The MAC address uniquely
identifies the phone.
For more information on phone configuration settings, go to the
chapter in the Cisco Unified Communications Manager Administration Guide.
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Cisco switches that work with the Cisco Unified IP Phone 6921, 6941, and 6961
The Cisco IOS releases that support bidirectional power negotiation
Other requirements and restrictions regarding power
Related Documentation for Power
You have enabled auto-registration in Cisco Unified Communications Manager
The phone has not been added to the Cisco Unified Communications Manager database
The phone is registering for the first time
URL
http://www.cisco.com/en/US/products/ps6951/index.html
http://www.cisco.com/en/US/netsol/ns340/ns394/ns147/ns412/net
working_solutions_package.html
http://cisco.com/en/US/products/hw/switches/index.html
http://www.cisco.com/en/US/products/hw/routers/index.html
http://www.cisco.com/en/US/products/sw/iosswrel/products_ios_
cisco_ios_software_category_home.html
Understanding Phone Configuration Files
Table 2-2. These documents
Cisco Unified IP Phone Configuration
2-5