Cisco Systems OL-14587-01 manual Refer to the Cisco Unified Communications

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

			Understanding the Phone Startup Process
Table 2-3		Cisco Unified IP Phone Startup Process (continued)
Process Step and Purpose			Related Topics
Step 4	Obtaining an IP Address		See the “Network Configuration Menu”
	If the Cisco Unified IP Phone is using DHCP to		section on page 4-7.
	obtain an IP address, the phone queries the DHCP		See the “Resolving Startup Problems”
	server to obtain one. If you are not using DHCP in		section on page 9-2.
	your network, you must assign static IP addresses
	to each phone locally.
Step 5	Accessing a TFTP Server		See the “Network Configuration Menu”
	In addition to assigning an IP address, the DHCP		section on page 4-7.
	server directs the Cisco Unified IP Phone to a		See the “Resolving Startup Problems”
	TFTP Server. If the phone has a statically defined		section on page 9-2.
	IP address, you must configure the TFTP server
	locally on the phone; the phone then contacts the
	TFTP server directly.
	Note You can also assign an alternative TFTP
		server to use instead of the one assigned by
		DHCP.
Step 6	Requesting the CTL file		Refer to the Cisco Unified Communications
	The TFTP server stores the certificate trust list		Manager Security Guide, “Configuring the
			Cisco CTL Client” chapter.
	(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.

	Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1
OL-14587-01		2-9