Cisco Systems OL-8555-01 manual Understanding

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network

Understanding the Phone Startup Process

Table 2-1 Cisco Unified IP Phone Startup Process (continued)

Step	Description	Related Topics
7. Requesting the	The TFTP server has configuration files, which	•	“Understanding
Configuration File.	define parameters for connecting to		Phone
	Cisco Unified CallManager and other information		Configuration
	for the phone.		Files” section on
			page 2-6
		•	Configuring
			Security on the
			Cisco Unified IP
			Phone, page 3-16
		•	Resolving Startup
			Problems,
			page 8-2.
8. Contacting	The configuration file defines how the	Resolving Startup
Cisco Unified	Cisco Unified IP Phone communicates with	Problems, page 8-2.
CallManager.	Cisco Unified CallManager. After obtaining the
	file from the TFTP server, the phone attempts to
	make a connection to the highest priority
	Cisco Unified CallManager 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 CallManager identifies the phone.
	If the phone was not manually added to the
	database and auto-registration is enabled in
	Cisco Unified CallManager, the phone attempts to
	auto-register itself in the
	Cisco Unified CallManager database.
	Note Auto-registration must be disabled if
	security is implemented.
	Cisco Unified CallManager informs devices using
	.cnf format configuration files of their load ID.
	Devices using .xml format configuration files
	receive the load ID in the configuration file.
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phones
OL-8555-01				2-9