2.3 Installation of the Trunk Cards
2.3.3BRI2 Card
Function
A B
RJ45 
(LINE1, LINE2)
LEDs
(1 to 2)
To NT1/Extension
Accessory and
Accessory (included): Extension Bolt ⋅ 1, Strap ⋅ 1
User-supplied (not included): RJ45 connector
Notes
•When connecting these optional service cards to the trunk, connect through NT1; do not connect to the trunk directly.
•This optional service card has 100 
of terminal resistance. For use of point to multi- point connection, the card must be placed at the end of the bus.
•This optional service card can be used for either trunk or extension connection, by setting the A/B switch or using the connector with appropriate pin assignments.
•For details about power failure transfer, refer to "2.11.1 Auxiliary Connection for Power Failure Transfer".
•To confirm the trunk connection, refer to "Confirming the Trunk Connection" in "2.12.1 Starting the Hybrid
Notice
If the connected ISDN terminal has no external power source, make sure that the power is supplied from the BRI2 card by programming the Hybrid
However, if there is an external power source to the terminal, make sure that there is no power supplied to the terminal from the BRI2 card. Failure to do so may cause damage to the power supply circuit of the BRI2 card or the terminal.
Switch Settings
Switch | Type | Usage and Status Definition |
|
|
|
A/B | Slide | Select A (default) for trunk or B for extension use. |
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Installation Manual
