E1 PRI
60
SmartNode 4960 User Manual
C • Cabling
E1 PRI
The E1 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 13
on
page 60.
Figure 13. Connecting an E1 PRI port to an NT1
Figure 14. E1 PRI port crossover cable
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 present 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 connect the
PRI cable to the PRI port only and not to any other RJ-45 socket.
WARNING
WARNING
Cross-over cable
NT
RS-232
Con
sole
ETH
0/0
ETH
0/1
Reset
0/0
0/1
0/2
0/3
T1/E1
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*
