3.5 Information about the Physical Trunk CardsInstallation Manual 1033.5.8 BRI4 Card (KX-TDA0284) and BRI8 Card (KX-TDA0288)FunctionAccessories and User-supplied ItemsAccessories (included): Ferrite core(s) × 1 (BRI4 card) or 2 (BRI8 card)User-supplied (not included): RJ45 connectorNotes• LINE 5 to LINE 8 are for BRI8 card only.• When connecting these optional service cards to the trunk, connect through an NT1; do notconnect to the U interface of the trunk directly.• These optional service cards have 100 Ω of terminal resistance. For use in point to multi-pointconnection, the cards must be placed at the end of the bus.• When connecting the RJ45 connector, attach the included ferrite core. Refer to "3.2.9 Attaching aFerrite Core".• These optional service cards can be used for either trunk or extension connection, by setting theA/B switch or using the connector with appropriate pin assignments.• For details about power failure transfer, refer to "3.14.1 Power Failure Connections".• To confirm the trunk connection, refer to "Confirming the Trunk Connection" in "3.15.1 Starting thePBX".NoticeIf 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.BRI4: 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/ Extension
