Understanding The Phone Startup Process - Cisco 7965G Administration Manual

Understanding the Phone Startup Process

Table 2-4 Cisco Unified IP Phone Startup Process (continued)
Process Step
6. Requesting the CTL
file.
7. Requesting the
Configuration File.
8. Contacting Cisco
Unified
Communications
Manager.
Cisco Unified IP Phone 7965G and 7945G Administration Guide for Cisco Unified Communications Manager 6.0
2-8
Description
The TFTP server stores the certificate trust list
(CTL) file. This file contains a list of Cisco
Unified Communications Managers and TFTP
servers that the phone is authorized to connect to.
It also contains the certificates necessary for
establishing a secure connection between the
phone and Cisco Unified Communications
Manager.
The TFTP server has configuration files, which
define parameters for connecting to Cisco
Unified Communications Manager and other
information for the phone.
The configuration file defines how the Cisco
Unified IP Phone communicates with Cisco
Unified Communications Manager and provides a
phone with its load ID. After obtaining the file
from the TFTP server, the phone attempts to make
a connection to the highest priority Cisco
Unified Communications Manager on the list. If
security is implemented, the phone makes a TLS
connection. Otherwise, it makes a non-secure TCP
connection.
If the phone was manually added to the database,
Cisco Unified Communications Manager
identifies the phone. If the phone was not
manually added to the database and
auto-registration is enabled in Cisco
Unified Communications Manager, the phone
attempts to auto-register itself in the Cisco
Unified Communications Manager database.
Note Auto-registration is disabled when
security is enabled on Cisco
Unified Communications Manager. In this
case, the phone must be manually added to
the Cisco Unified Communications
Manager database.
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Related Topics
Refer to Cisco Unified
Communications
Manager Security
Guide, "Configuring the
Cisco CTL Client"
chapter.
See the "Understanding
Phone Configuration
Files" section on
page 2-5.
See the "Resolving
Startup Problems"
section on page
See the "Resolving
Startup Problems"
section on page
9-2.
9-2.
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