Understanding Phone Configuration Files - Cisco 7961G-GE - IP Phone VoIP Administration Manual

Understanding Phone Configuration Files

Understanding Phone Configuration Files
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
2-8
Chapter 2
Other requirements and restrictions regarding power
•
Table 2-3 Related Documentation for Power
Document Topics
Cisco Unified IP Phone
Power Injector
PoE Solutions
Cisco Catalyst Switches
Integrated Service
Routers
Cisco IOS Software
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.
(These files are digitally signed to ensure the authenticity of the files' source.)
In addition, if the device security mode in the configuration file is set to
Authenticated and the CTL file on the phone has a valid certificate for
Cisco Unified Communications Manager, the phone establishes a TLS connection
to Cisco Unified Communications Manager. Otherwise, the phone establishes a
TCP connection. For SIP phones, a TLS connection requires that the transport
Preparing to Install the Cisco Unified IP Phone on Your Network
URL
http://www.cisco.com/en/US/products/hw/phones/p
s379/prod_installation_guides_list.html
http://www.cisco.com/en/US/netsol/
ns340/ns394/ns147/ns412/networking_solutions_
package.html
http://www.cisco.com/en/US/products/hw/switches/
tsd_products_support_category_home.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
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