Chapter2 Preparing to Install the Cisco Unified IP Phone o n Your Network
Understanding the Phone Startup Process
2-12
Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
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7. Requesting the
Configuration File.
The TFTP server has configuration files, which
define parameters for connecting to Cisco
UnifiedCallManager and other information for
the phone.
•Understanding
Phone
Configuration
Files, page 2-8
•Resolving Startup
Problems,
page 9-2.
8. Contacting Cisco
UnifiedCallManager.
The configuration file defines how the Cisco
Unified IP Phone communicates with Cisco
UnifiedCallManager 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 UnifiedCallManager 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
UnifiedCallManager, the phone attempts to
auto-register itself in the Cisco
UnifiedCallManager database.
Note Auto-registration is disabled when
security is enabled on Cisco
Unified CallManager. In this case, the
phone must be manually added to the
Cisco Unified CallManager database.
Resolving Startup
Problems, page 9-2.
Table2-4 Cisco Unified IP Phone Startup Process (continued)
Step Description Related Topics