Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Understanding Phone Configuration Files
2-6
Cisco Unified SIP Phone 3911 Administration Guide for Cisco Unified Communications Manager
OL-14029-01
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 made to the phone’s configuration
file automatically.
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.
The phone first attempts to access the SEP<MAC>.cnf.xml file. If this file does
not exist, then it will look for the XMLDefault.cnf.xml from the TFTP server
when the following conditions exist:
•
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
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. In this case, the phone will reset and attempt to register repeatedly.
If the phone has registered before, the phone will access the configuration file
named SEPmac_address.cnf, where mac_address is the MAC address of the
phone.
Integrated Service
Routers
http://www.cisco.com/en/US/products/hw/rout-
ers/index.html
Cisco IOS Software
http://www.cisco.com/en/US/products/sw/ioss-
wrel/products_ios_cisco_ios_software_category_
home.html
Table 2-2
Related Documentation for Power (continued)
Document Topics
URL
Summary of Contents for 3911
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