2.12 Power Failure Connections
Installation Manual 207
Using BRI Card
LINE 1 and LINE 2 of the BRI4 and BRI8 cards can be used for Power Failure Connections.
Note
When the power returns, the connection will switch back to normal configuration from th e Power Failure
Connection, and a trunk conversation established during power failure will be dropped.
Accessory and User-supplied Items
Accessory (included): none
User-supplied (not included): RJ45 connectors

Switch Settings

RJ45 Connector LINE 1 Pin Assignments

Switch Type Usage and Status Definition
PFT Setting DIP Set all DIP switches to "ON" positions to use LINE 1 and LINE 2 as a
PFT port.
LINE 1: Power Failure LINE (NT1)
LINE 2: Power Failure EXTN (extension)
No. Signal Name Level [V] Function
1-2 Reserved ––
3 TX1 (+) Transmit data 1
4 RX2 (+) Receive data 2
5 RX1 (-) Receive data 1
6 TX2 (-) Transmit data 2
7-8 Reserved ––
RJ45
(LINE 2)
RJ45
(LINE 1)
To NT 1
OFF
ON
OFF
ON
To ISDN extension
Set all DIP switches
at "ON" positions.
8
1