This manual provides basic information on how you can access commonly used PBX functions with proprietary telephones (PTs), single line telephones (SLTs), portable stations (PSs), and DSS Consoles. The contents of this manual apply to PBXs versions KX-TDA50: PSMPR Software File Version 3.0000 or later, KX-TDA100/KX-TDA200: PMPR Software File Version 3.0000 or later, and KX-TDA600: PLMPR Software File Version 3.1000 or later.