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. You must be sure to have the appropriate phone firmware files for the
                              		types of phones, protocol being used, and Cisco Unified CME version at your
                              		site. 
                              	 
                           
                           New IP phones are
                              		shipped from Cisco with a default manufacturing SCCP image. When a IP phone
                              		downloads its configuration profile, the phone compares the phone firmware
                              		mentioned in the configuration profile with the firmware already installed on
                              		the phone. If the firmware version differs from the one that is currently
                              		loaded on the phone, the phone contacts the TFTP server to upgrade to the new
                              		phone firmware and downloads the new firmware before registering with
                              		Cisco Unified CME. 
                              	 
                           
                           Generally, phone
                              		firmware files are included in the Cisco Unified CME software archive that you
                              		download. They can also be posted on the software download website as
                              		individual files or archives. 
                              	 
                           
                           Early versions of
                              		Cisco phone firmware for SCCP and SIP IP phones had filenames as follows: 
                              	 
                           
                           
                           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. 
                                    		  
                                  
There are exceptions
                              		to the general guidelines. For Cisco ATA, the filename begins with AT. For
                              		Cisco Unified IP Phone 7002, 7905, and 7912, the filename can begin with CP. 
                              	 
                           
                           Signed and unsigned
                              		versions of phone firmware are available for certain phone types. Signed binary
                              		files support image authentication, which increases system security. We
                              		recommend signed versions if your version of Cisco Unified CME supports them.
                              		Signed binary files have .sbn file extensions, and unsigned files have .bin
                              		file extensions. 
                              	 
                           
                           For Java-based IP
                              		phones, such as the Cisco Unified IP Phone 7911, 7941, 7941GE, 7961, 7961GE,
                              		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 
 
Table 1 contains firmware-naming convention examples, in alphabetical order: 
                           
                           
                              Table 1. Firmware-Naming Conventions
                              
                                 
                                 
                                 
                                 
                              
                              
                                 
                                    | SCCP
                                          				  Phones 
                                          				
                                        | SIP Phones
                                          				  
                                          				
                                        | 
                              
                              
                                 
                                    | Image 
                                          				
                                        | Version 
                                          				
                                        | Image 
                                          				
                                        | Version 
                                          				
                                        | 
                                 
                                    | P00303030300 
                                          				
                                        | 3.3(3) 
                                          				
                                        | P0S3-04-4-00 
                                          				
                                        | 4.4 
                                          				
                                        | 
                                 
                                    | P00305000200 
                                          				
                                        | 5.0(2) 
                                          				
                                        | P0S3-05-2-00 
                                          				
                                        | 5.2 
                                          				
                                        | 
                                 
                                    | P00306000100 
                                          				
                                        | 6.0(1) 
                                          				
                                        | P0S3-06-0-00 
                                          				
                                        | 6.0 
                                          				
                                        | 
                                 
                                    | SCCP41.8-0-4ES4-0-1S 
                                          				
                                        | 8.0(4) 
                                          				
                                        | SIP70.8-0-3S 
                                          				
                                        | 8.0(3) 
                                          				
                                        | 
                                 
                                    | TERM41.7-0-3-0S 
                                          				
                                        | 7.0(3) 
                                          				
                                        | — 
                                          				
                                        | — 
                                          				
                                        | 
                              
                           
                           The phone firmware
                              		filenames for each phone type and Cisco Unified CME version are listed in the
                              		appropriate document available at 
                              		Cisco CME Supported Firmware,
                                 		  Platforms, Memory, and Voice Products. 
                              	 
                           
                           For information
                              		about installing firmware files, see 
                              		Install Cisco Unified CME Software.
                              		
                              	 
                           
                           For information
                              		about configuring Cisco Unified CME for upgrading between versions or
                              		converting between SCCP and SIP, see 
                              		Install and Upgrade Cisco Unified CME Software.