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Understanding Phone Configuration Files

If the device security mode in the configuration file is set to secure, but the phone has not received a

Note

CTL file, the phone tries four times to obtain a CTL file so it can register securely.

Cisco Extension Mobility Cross Cluster is an exception, in that the phone permits a TLS connection to

Note

Cisco Unified CM for secure signaling even without the CTL file.

If you configure security-related settings in Cisco Unified CM 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 CM.

A phone accesses a default configuration file named XmlDefault.cnf.xml only when the phone has not

received a valid Trust List file containing a certificate assigned to the Cisco Unified CM and TFTP.

If auto registration is not enabled and you did not add the phone to the Cisco Unified CM database, the

phone does not attempt to register with Cisco Unified CM. The phone continually displays the

"Configuring IP" message until you either enable auto-registration or add the phone to the Cisco Unified

CM database.

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 SIP phones, the TFTP server generates these SIP configuration files:

SIP IP Phone:

•

–

Dial Plan—<dialplan>.xml

•

Softkey Template—<softkey_template>.xml

•

The filenames are derived from the MAC Address and Description fields in the Phone Configuration

window of Cisco Unified CM Administration. The MAC address uniquely identifies the phone.

For more information on phone configuration settings, go to the

chapter in the Cisco Communications Manager Administration Guide.

For more information also refer to the Cisco Unified Communications Manager Security Guide.

Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

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For unsigned and unencrypted files—SEP<mac>.cnf.xml

For signed files—SEP<mac>.cnf.xml.sgn

For signed and encrypted files—SEP<mac>.cnf.xml.enc.sgn

Cisco Unified IP Phone Configuration

Chapter

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