These conventions are used in naming the IP Phone firmware:
SCCP firmware: P003xxyyzzww.bin: 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.
MGCP firmware: P0M3-xx-y-zz: where M is the third character. The major, minor, and subversions for MGCP are consistent with the SIP naming convention
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.