System version allows you to note the version number of the System Processor (SP) software, which resides in the Feature Cartridge.
Use the SP version number to determine whether you have the latest software release, and to trace a software fault if one occurs.
• SP version number can indicate a Feature Cartridge incompatibility.
• SP and telephone version numbers can indicate a telephone version incompatibility.
• SP and functional terminal version numbers can indicate a functional terminal incompatibility.