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Understanding the Phone Startup Process

Table 2-3

Cisco Unified IP Phone Startup Process (continued)

Process Step and Purpose

Step 7

Requesting the Configuration File

The TFTP server has configuration files, which

define parameters for connecting to Cisco

Unified Communications Manager and other

information for the phone.

Step 8

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.

Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1

2-10

Chapter 2

Preparing to Install the Cisco Unified IP Phone on Your Network