Phone Firmware Files

Phone firmware files provide code to enable phone displays and operations. These files are specialized for each phone type and protocol, SIP or SCCP, and are periodically revised. The appropriate phone firmware files for the types of phones, protocol being used, and Cisco Unified CME version at your site.

Early versions of Cisco phone firmware for SCCP and SIP IP phones had filenames as follows:

• SCCP firmware—P003xxyy.bin
• SIP firmware—P0S3xxyy.bin

In both bases, x represents the major version, and y represented the minor version. The third character represents the protocol, "0" for SCCP or "S" for SIP.

In later versions, the following conventions are used:

• SCCP firmware—P003xxyyzzww, where x represents the major version, y represents the major subversion, z represents the maintenance version, and w represents the maintenance subversion.
• SIP firmware—P0S3-xx-y-zz, where x represents the major version, y represents the minor version, and z represents the subversions.
• The third character in a filename—Represents the protocol, "0" for SCCP or "S" for SIP.

For Java-based IP phones, such as the Cisco Unified IP Phone 7911, 7941, 7941GE, 7961, 796GE, 7970, and 7971, the firmware consists of multiple files including JAR and tone files. All of the firmware files for each phone type must be downloaded the TFTP server before they can be downloaded to the phone.

The following example shows a list of phone firmware files that are installed in flash memory for the Cisco Unified IP Phone 7911:

tftp-server flash:SCCP11.7-2-1-0S.loads
tftp-server flash:term06.default.loads
tftp-server flash:term11.default.loads
tftp-server flash:cvm11.7-2-0-66.sbn
tftp-server flash:jar11.7-2-0-66.sbn
tftp-server flash:dsp11.1-0-0-73.sbn
tftp-server flash:apps11.1-0-0-72.sbn
tftp-server flash:cnu11.3-0-0-81.sbn

However, you only specify the filename for the image file when configuring Cisco Unified CME. For Java-based IP phones, the following naming conventions are used for image files:

• SCCP firmware—TERMnn.xx-y-z-ww or SCCPnn.xx-y-zz-ww, where n represents the phone type, x represents the major version, y represents the major subversion, z represents the maintenance version, and w represents the maintenance subversion.

The following example shows how to configure Cisco Unified CME so that the Cisco Unified IP Phone 7911 can download the appropriate SCCP firmware from flash memory:

Router(config)#telephony-service
Router(config-telephony)#load 7911 SCCP11.7-2-1-0S