2.4.9 BRI4 Card (KX-TDA0284) and BRI8 Card (KX-TDA0288)FunctionBRI4: 4-port ISDN Basic Rate Interface card with 1 power failure transfer port. EURO-ISDN/ETSIcompliant.BRI8: 8-port ISDN Basic Rate Interface card with 1 power failure transfer port. EURO-ISDN/ETSIcompliant.LEDsRJ45(LINE 1 to LINE 8)ABTo NT1/ ExtensionAccessories and User-supplied ItemsAccessories (included): Ferrite core(s) ´ 1 (BRI4 card) or 2 (BRI8 card)User-supplied (not included): RJ45 connectorCAUTION• If the connected ISDN terminal has no external power source, make sure that the power is suppliedfrom the BRI4/BRI8 card by programming the PBX accordingly.However, if there is an external power source to the terminal, make sure that there is no power suppliedto the terminal from the BRI4/BRI8 card. Failure to do so may cause damage to the power supply circuitof the BRI4/BRI8 card or the terminal.• When connecting these optional service cards to the trunk, connect through an NT1; do not connectto the U interface of the trunk directly.NoticeWhen connecting the RJ45 connector, attach the included ferrite core. Refer to "2.2.8 Attaching a FerriteCore".Note• LINE 5 to LINE 8 are for BRI8 card only.• These optional service cards have 100 W of terminal resistance. For use in point to multi-pointconnection, the cards must be placed at the end of the bus.• These optional service cards can be used for either trunk or extension connection, by setting the A/Bswitch or using the connector with appropriate pin assignments.• For details about power failure transfer, refer to "2.10.1 Power Failure Connections".• To confirm the trunk connection, refer to "Confirming the Trunk Connection" in "2.11.1 Starting thePBX".76 Installation Manual2.4.9 BRI4 Card (KX-TDA0284) and BRI8 Card (KX-TDA0288)
