General Features154 Features GuideIntegrated Services Digital Network (ISDN) ExtensionDescriptionThe system supports terminal equipment which have a separate power supply. For example, anISDN telephone, G4 Facsimile and personal computers which are connected to the optionalISDN Line Unit, KX-TD284.A maximum of eight terminal equipment can be connected to each ISDN bus with point-to-multi-point configuration. Terminal equipment can be addressed individually with MultipleDirectory Numbers (MDN). The MDN consists of the ISDN extension number and anadditional digit, 0 through 9. If MDN is not assigned, all equipment on the same ISDN bus arecalled simultaneously.The following capabilities can be supported:The functions of the terminal equipment are similar to single line telephone functions exceptfor the following features:Automatic Callback Busy (Camp-On)Busy Station Signaling (BSS)CALL FORWARDING FEATURES — SUMMARYCall Hold — Outside LineCall Hold — IntercomCall Hold Retrieve — IntercomCall Hold, Exclusive — Outside LineCall Hold, Exclusive — IntercomCall ParkCall Pickup, DirectedCall Pickup, GroupCall Pickup, Outside LineCALL TRANSFER FEATURES — SUMMARYCall WaitingConferenceDo Not Disturb (DND)Log-In / Log-OutMessage WaitingPaging — Group AnswerParalleled TelephonePickup DialingTransfer Mode Transfer CapabilityCircuit Unrestricted digitalCircuit SpeechCircuit 3.1 kHz Audio