Cisco 7970G Administration Manual page 76

Understanding the Phone Startup Process
Table 2-4 Cisco Unified IP Phone Startup Process (continued)
Step
7. Requesting the
Configuration File.
8. Contacting Cisco
Unified CallManager.
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
2-12
Chapter 2
Description
The TFTP server has configuration files, which
define parameters for connecting to Cisco
Unified CallManager and other information for
the phone.
The configuration file defines how the Cisco
Unified IP Phone communicates with Cisco
Unified CallManager 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 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.
Auto-registration is disabled when
Note
security is enabled on Cisco
Unified CallManager. In this case, the
phone must be manually added to the
Cisco Unified CallManager database.
Preparing to Install the Cisco Unified IP Phone on Your Network
Related Topics
Understanding
•
Phone
Configuration
Files, page 2-8
Resolving Startup
•
Problems,
page 9-2.
Resolving Startup
Problems, page 9-2.
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