Cisco 7906G - Unified IP Phone VoIP Administration Manual page 64

Understanding the Phone Startup Process
Table 2-3 Cisco Unified IP Phone Startup Process (continued)
Process Step and Purpose
Step 4
Obtaining an IP Address.
If the Cisco 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.
Step 5
Accessing a TFTP Server.
Step 6 Requesting the CTL file.
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.
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.1
2-10
Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Related Topics
See the
section on page
See the
section on page
See the
section on page
See the
section on page
Refer to the
Cisco Unified Communications Manager
Security Guide, "Configuring the Cisco
CTL Client" chapter.
"Network Configuration Menu"
4-7.
"Resolving Startup Problems"
9-2.
"Network Configuration Menu"
4-7.
"Resolving Startup Problems"
9-2.
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