1.11.9 Parallelled TelephoneDescriptionMultiple telephones can be connected to the same port. This is useful to increase the number of telephoneswithout additional extension cards. The combinations and features of the parallelled telephones are describedbelow.Features Descriptions ConnectionsDigital ExtraDevice Port(XDP)Digital XDP involves the connection of a DPT to aDPT that is connected to a DPT port. The DPT thatis connected directly to the PBX is called the"master DPT", and the DPT connected to themaster DPT is called the "slave DPT".Each telephone can act as a completely differentextension with its own extension number.PBXDPT + DPTDPTExtn. 101 Extn. 201DPTMaster SlaveWireless XDPParallel ModeFor this connection, refer to 1.25.5 Wireless XDPParallel Mode.PBXPSPTDPT/SLT + PSPSSLTExtn. 101Extn. 101Extn. 102Extn. 102Conditions[DPT + DPT]• Capable TelephonesKX-DT300 series and KX-T7600 series, except KX-T7640. Note that the KX-T7667 can only be connectedas a slave DPT.• When using Digital XDP connection, the following features cannot be used with either the master or slaveDPT:a. OHCA: A call waiting tone will be heard even if the OHCA feature is set.b. USB Module/Bluetooth® Module: The DPTs will not work correctly if a USB Module or Bluetooth Moduleis connected. Do not connect USB Modules or Bluetooth Modules to the DPTs.NoteEven if the slave DPT is disconnected, the OHCA feature and USB Module still cannot be used with themaster DPT. To use them, the master DPT must be disconnected from the PBX, and then reconnected.Feature Guide 1591.11.9 Parallelled Telephone
