Cisco 7906G - Unified IP Phone VoIP Administration Manual page 61

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network
In addition, if the device security mode in the configuration file is set to
Authenticated and the CTL file on the phone has a valid certificate for
Cisco Unified Communications Manager, the phone establishes a TLS connection
to Cisco Unified Communications Manager Administration. Otherwise, the
phone establishes a TCP connection.
If the device security mode in the configuration file is set to Authenticated or
Note
Encrypted but the phone has not received a CTL file, the phone will continuously
try to obtain a CTL file, so it can register securely.
If you configure security-related settings in Cisco Unified Communications
Manager Administration, the phone configuration file will contain sensitive
information. To ensure the privacy of a configuration file, you must configure it
for encryption. For detailed information, refer to the "Configuring Encrypted
Phone Configuration Files" chapter in Cisco Unified Communications Manager
Security Guide.
A phone requests a configuration file whenever it resets and registers with
Cisco Unified Communications Manager.
A phone accesses a default configuration file named XmlDefault.cnf.xml from the
TFTP server when these conditions exist:
•
•
•
If auto registration is not enabled and the phone has not been added to the
Cisco Unified Communications Manager Database, the phone registration request
will be rejected. In this case, the phone will reset and attempt to register
repeatedly.
If the phone has registered before, the phone will access the configuration file
named SEPmac_address.cnf.xml, where mac_address is the MAC address of the
phone. For more information about how the phone interacts with the TFTP server,
refer to Cisco Unified Communications Manager System Guide, "Cisco TFTP"
chapter.
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.1
OL-14585-01
You have enabled auto-registration in Cisco Unified Communications
Manager
The phone has not been added to the Cisco Unified Communications
Manager database
The phone is registering for the first time
Understanding Phone Configuration Files
2-7