Filter
Top Products
T1 Port 45
OnSite Model 2884 User Manual C • Cabling
T1 Port
The T1 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 with a PBX. A cross-over cable is required to connect to an NT device, as illustrated in figure 17 on
page 45.
Figure 17. Connecting a T1 port to an NT device
Figure 18. T1 crossover cable
Hazardous network voltages are present in the T1/E1 cables. If you detach the
cable, detach the end away from the OnSite 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-45, male
RX Ring
RX Tip
RX Shield
TX Ring
TX Tip
TX Shield
N/C
N/C
RJ-45, 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*