6-2
Chapter 6
Connecting Central Office Circuits
ISDN PRI Circuit
Using a standard, straight-through 8-conductor data cable or straight-through 8-conductor line
cord, connect the Network Terminating Unit to the TEPRI card as shown in Figure 6-5
.
ISDN BRI Lines
The Basic Rate Interface (BRI) card can be used as ISDN TE (Terminal Equipment) or NT2
(Network Termination 2 / Multi-way ISDN Interface). When programmed to T-mode, the default
setting, this port provides T point (Figure 6-6a
).
NOTE: When you are connecting a T port to an NT, please take care if there is a
termination present in any place on the bus other than this BRI card—typical 100 Ohm line
termination resistance exists on each port of this card (Figure 6-6b
).
For ISDN station interface as S point of NT2, see Chapter 7.
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