Cisco Systems 8.6 manual Security Guide, Security by Default, Adding Phones with Auto-Registration

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

Adding Phones to the Cisco Unified Communications Manager Database

Table 2-3	Cisco Unified IP Phone Startup Process (continued)
Task	Purpose	Related Topics
7.	Requesting the ITL file.	Refer to Cisco Unified Communications Manager
	The phone requests the ITL file after it requests the	Security Guide, Security by Default.
	CTL file. The ITL file contains the certificates of the
	entities that the phone can trust. The certificates are
	used for authenticating a secure connection with the
	servers or authenticating a digital signature signed by
	the servers.
8.	Requesting the Configuration File	• Adding Phones to the Cisco Unified
	The TFTP server has configuration files, which define	Communications Manager Database, page 2-8.
	parameters for connecting to Cisco	• Resolving Startup Problems, page 9-1.
	Unified Communications Manager and other
	information for the phone.
9.	Contacting Cisco Unified Communications Manager	• Resolving Startup Problems, page 9-1.
	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. When security is implemented, if
	the security profile of the phone is configured for
	secure signaling (encrypted or authenticated), and the
	Cisco Unified Communications Manager 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 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 you
	configure the CTL client. In this case, the
	phone must be manually added to the Cisco
	Unified Communications Manager database.

Adding Phones to the Cisco Unified Communications Manager Database

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

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

Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

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