Patton SmartNode 4970A Series, Руководство пользователя

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E1 PRI 43
SmartNode 4970A User Manual C • Cabling
Figure 10. Typical Ethernet straight-through cable diagram for 1000Base-T
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 11 on
page 43.
Figure 11. Connecting an E1 PRI port to an NT1
Hazardous network voltages are present in the PRI cables. If
you detach the cable, detach the end away from the Smart-
Node 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.
RJ-45, male
1
2
3
6
4
5
7
8
RJ-45, male
1
2
3
6
4
5
7
8
WARNING
WARNING
Cross-over cable
NT
RS-232
Console
ETH 0/1
Reset
0/0
0/1
0/2
0/3
T1/E1