20
SmartNode OpenScape Business Appliance Quick Start Guide
Figure 13.
E1 PRI port crossover cable
B.6 T1 PRI
The T1 PRI is usually connected to a PBX or switch—local exchange (LE).
Type and pin outs of these devices vary depending on the manufacturer. In
most cases, a straight-through RJ-45 to RJ-45 can be used to connect the
PRI with a PBX. A cross-over cable is required to connect to an NT device, as
illustrated in
figure 14
on page 21.
Hazardous network voltages are present in the PRI
cables. If you detach the cable, detach the end away from
the SmartNode or interface card first to avoid possible
electric shock. Network hazardous voltages may be pres-
ent on the device in the area of the PRI port, regardless of
when power is turned OFF
To prevent damage to the system, make certain you con-
nect the PRI cable to the PRI port only and not to any other
RJ-45 socket.
RJ-48C, male
RX Ring
RX Tip
RX Shield
TX Ring
TX Tip
TX Shield
N/C
N/C
RJ-48C, male
RX Ring
RX Tip
RX Shield
TX Ring
TX Tip
TX Shield
N/C
N/C
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
*N/C = No connection*
WARNING
WARNING
