Cisco 7931G - Unified IP Phone VoIP Administration Manual page 61

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Table 2-3 Cisco Unified IP Phone Startup Process (continued)
Process Step
4. Obtaining an IP
Address
5. Accessing a TFTP
Server
6. Requesting the CTL
file
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12457-01
Description
If the Cisco Unified IP Phone is using DHCP to
obtain an IP address, the phone queries the DHCP
server to obtain one. If you are not using DHCP in
your network, you must assign static IP addresses
to each phone locally.
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.
You can also assign an alternative TFTP
Note
server to use instead of the one assigned by
DHCP.
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.
Understanding the Phone Startup Process
Related Topics
See the "Network
Configuration Menu"
section on page
See the "Resolving
Startup Problems"
section on page
See the "Network
Configuration Menu"
section on page
See the "Resolving
Startup Problems"
section on page
Refer to the Cisco
Unified
Communications
Manager Security
Guide, "Configuring the
Cisco CTL Client"
chapter.
4-7.
9-2.
4-7.
9-2.
2-9