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Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Understanding the Phone Startup Process
2-10
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SCCP), Cisco Unified IP Phones
OL-8148-01
5. Accessing a TFTP
Server
In addition to assigning an IP address, the DHCP
server directs the Cisco Unified IP Phone to a
TFTP Server. If the phone has a statically-defined
IP address, you must configure the TFTP server
locally on the phone; the phone then contacts the
TFTP server directly.
Note You can also assign an alternative TFTP
server to use instead of the one assigned by
DHCP.
See the “Network
Configuration Menu”
section on page 4-7.
See the “Resolving
Startup Problems”
section on page 9-2.
6. Requesting the CTL
file
The TFTP server stores the certificate trust list
(CTL) file. This file contains a list of Cisco
Unified CallManagers 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 CallManager.
Refer to the Cisco
Unified CallManager
Security Guide,
“Configuring the Cisco
CTL Client” chapter.
7. Requesting the
Configuration File
The TFTP server has configuration files, which
define parameters for connecting to Cisco
Unified CallManager and other information for
the phone.
See the “Understanding
Phone Configuration
Files” section on
page 2-8.
See the “Resolving
Startup Problems”
section on page 9-2.
Table 2-4 Cisco Unified IP Phone Startup Process (continued)
Process Step Description Related Topics