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E1 Port 45
IpLink 2884/2888 Getting Started Guide C • Cabling
E1 Port
The E1 Port 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 T1/E1 Port with a PBX. A cross-over cable is required to connect to an NT device, as illustrated in
figure 14 on page 45.
Figure 14. Connecting an E1 port to an NT1
Figure 15. E1 port crossover cable
Hazardous network voltages are present in the T1/E1 cables. If you detach the
cable, detach the end away from the IpLink or interface card first to avoid pos-
sible electric shock. Network hazardous voltages may be present on the device
in the area of the T1/E1 port, regardless of when power is turned OFF.
To prevent damage to the system, make certain you connect the
T1/E1 cable to the T1/E1 port only and not to any other RJ-45
socket.
WARNING
WARNING
NT
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*