Cisco 7961G-GE - IP Phone VoIP Administration Manual page 63

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
Table 2-4 Cisco Unified IP Phone Startup Process (continued)
Step
3. Configuring VLAN
4. Obtaining an IP
Address
5. Accessing a TFTP
Server
6. Requesting the CTL
file
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
OL-11953-01
Description
If the Cisco Unified IP Phone is connected to a
Cisco Catalyst switch, the switch next informs the
phone of the voice VLAN defined on the switch.
The phone needs to know its VLAN membership
before it can proceed with the Dynamic Host
Configuration Protocol (DHCP) request for an IP
address.
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
Network
•
Configuration
Menu, page
Resolving Startup
•
Problems,
page 9-2.
• Network
Configuration
Menu, page
Resolving Startup
•
Problems,
page 9-2.
Network
•
Configuration
Menu, page
Resolving Startup
•
Problems,
page 9-2.
Refer to the
Cisco Unified Communi
cations Manager
Security Guide,
"Configuring the Cisco
CTL Client" chapter.
4-7.
4-7.
4-7.
2-11