Cisco Systems OL-23089-01 Adding Phones to Cisco Unified CM, Security Guide, Security by, Default

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

Adding Phones to Cisco Unified CM

Table 2-2		Cisco Unified IP Phone Startup Process (continued)
No.	Process		Description	Related Topics
7.	Requesting the ITL file.		The phone requests the ITL file after it requests the CTL	See the Cisco Unified
			file. The ITL file contains the certificates of the entities	Communications Manager
			that the phone can trust. The certificates are used for	Security Guide, Security by
			authenticating a secure connection with the servers or	Default.
			authenticating a digital signature signed by the servers.
			The ITL file is available to the phone only on Cisco
			Unified CM 8.0 and later.
8.	Requesting the		The TFTP server has configuration files, which define	See Understanding Phone
	Configuration file.		parameters for connecting to Cisco Unified CM and	Configuration Files, page 2-5.
			other information for the phone.	See Resolving Startup Problems,
				page 9-1.
9.	Contacting Cisco Unified		The configuration file defines how the Cisco	See Resolving Startup Problems,
	Communications		Unified IP Phone communicates with Cisco Unified CM	page 9-1.
	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 CM on
			the list. If the security profile of the phone is configured
			for secure signaling (encrypted or authenticated) and the
			Cisco Unified CM is set to secure mode, the phone makes
			a TLS connection. Otherwise, it makes a nonsecure
			TCP connection.
			If the phone was manually added to the database, Cisco
			Unified CM identifies the phone. If the phone was not
			added manually to the database and auto-registration is
			enabled in Cisco Unified CM, the phone attempts to
			auto-register itself in the Cisco Unified CM database.
			Note Auto-registration is disabled when security is
			enabled on Cisco Unified CM. In this case, the
			phone must be manually added to the Cisco
			Unified CM database.

Adding Phones to Cisco Unified CM

Before installing the Cisco Unified IP Phone, you must choose a method for adding phones to the Cisco Unified CM database. These sections describe the methods:

•Adding Phones with Auto-Registration, page 2-8

•Adding Phones with Auto-Registration and TAPS, page 2-9

•Adding Phones with Cisco Unified CM Administration, page 2-9

•Adding Phones with BAT, page 2-10

Table 2-3provides an overview of these methods for adding phones to the Cisco Unified CM database.

Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 8.5 (SCCP and SIP)

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