Specifications
Voice Interface Cards
ISDN BRI Interface Cards
12
OL-12847-01
Step 2 Connect one end of a straight-through RJ-45-to-RJ-45 cable to the RJ-45 port on the card. (See
Figure 93.)
Figure 93 Connecting the 2-Port ISDN BRI Card
Note When the interface is configured as NT and is connecting to a TE device, the cable must have
the transmit and receive pins swapped (crossover cable). See Table 25.
Step 3 Connect the other end of the cable to the RJ-45 wall outlet or other device.
RJ-45 ports
-
R
R
R
4
trt-tro
RJ-45-to-RJ-45
port
Table 25 Interface Pin Numbers and Functions
ISDN BRI NT/TE Card NT Interface
1
1. Use a straight-through cable for NT interfaces.
TE Interface
2
2. Use a crossover cable for TE interfaces.
Pin 3/T+ Pin 3/R+ Pin 3/T+
Pin 4/R+ Pin 4/T+ Pin 4/R+
Pin 5/R- Pin 5/T- Pin 5/R-
Pin 6/T- Pin 6/R- Pin 6/T-