This manual is designed for users of Digital Super Hybrid System KX-TD500. It is to be used after the system is installed and System Programming is completed. The focus is Digital Proprietary Telephones (DPTs); KX-T7220/KX-T7230/KX-T7235/KX-T7250/KX-T7420/KX-T7425/KX-T7431/ KX-T7433/KX-T7436/KX-T7450, Digital DSS Consoles; KX-T7240/KX-T7440/ KX-T7441, Single Line Telephones (SLTs) and their features. The step-by-step procedures required to activate each feature are discussed in detail.