Cisco 8961 Administration Manual page 73
Unified communications manager 10.0 sip
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Cisco Unified IP Phone and telephony networks
REVIEW DRAFT - CISCO CONFIDENTIAL
For more information, see
4 Load the stored phone image. The Cisco Unified IP Phone has nonvolatile flash memory in which the
phone stores firmware images and user-defined preferences. At startup, the phone runs a bootstrap loader
that loads a phone firmware image that is stored in flash memory. Using this image, the phone initializes
the software and hardware.
For more information, see
5 Configure the VLAN. If the Cisco Unified IP Phone is connected to a Cisco Catalyst switch, the switch
next informs the phone of the voice VLAN that is defined on the switch. The phone needs to know the
VLAN membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request
for an IP address.
For more information, see
6 Obtain an IP address. If the Cisco Unified IP Phone is using DHCP to obtain an IP address, the phone
queries the DHCP server to obtain one. If you are not using DHCP in your network, you must assign static
IP addresses to each phone locally.
For more information, see
7 Request the CTL file. The TFTP server stores the CTL file. This file contains the certificates that are
necessary for establishing a secure connection between the phone and Cisco Unified Communications
Manager.
For more information, see the Cisco Unified Communications Manager Security Guide, "Configuring the
Cisco CTL Client" chapter.
8 Request the ITL file. The phone requests the ITL file after it requests the CTL file. The ITL file contains
the certificates of the entities that the phone can trust. The certificates are used to authenticate a secure
connection with the servers or to authenticate a digital signature signed by the servers. Cisco Unified
Communications Manager 8.5 and later supports the ITL file.
For more information, see
and Maintenance, on page 267
9 Access a TFTP server. In addition to assigning an IP address, the DHCP server directs the
Cisco Unified IP Phone to a TFTP Server. If the phone has a statically defined IP address, you must
configure the TFTP server locally on the phone; the phone then contacts the TFTP server directly.
You can also assign an alternate TFTP server to use instead of the one that DHCP assigns.
Note
For more information, see
10 Request 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.
For more information, see
50
and
11 Contact Cisco Unified Communications Manager. The configuration file defines how the Cisco
Unified IP Phone communicates with Cisco Unified CM and provides a phone with the load ID. After it
obtains the file from the TFTP server, the phone attempts to make a connection to the highest priority
Cisco Unified CM on the list.
Authentication Methods, on page
Startup Problems, on page
Ethernet Setup menu, on page 104
Ethernet Setup menu, on page 104
Cisco Unified IP Phone and telephony networks, on page 41
chapter.
Ethernet Setup menu, on page 104
Cisco Unified Communications Manager Phone Addition Methods, on page
Startup Problems, on page
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
94.
267.
and
and
and
267.
Phone Startup Process
Startup Problems, on page
267.
Startup Problems, on page
267.
and
Troubleshooting
Startup Problems, on page
267.
(SIP)
49
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