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SmartNode 1000 and 2000 Series Getting Started Guide
E1 PRI
The E1 PRI is usually connected to a PBX or telco witch—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 (an NT) (see
illustrated in
figure
104.
S LO
T
3
S LO
T
2
RJ-48C, male
TX Ring
TX Tip
TX Shield
RX Ring
RX Tip
RX Shield
E1 PRI
figure
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.
The Interconnecting cables shall be acceptable for external use and shall be
rated for the proper application with respect to voltage, current, anticipated
temperature, flammability, and mechanical serviceability
S LO
T
1
Figure 103. Connecting an E1 PRI port to an NT
1
2
3
4
5
6
Figure 104. E1 crossover cable
103). A cross-over cable is required to connect to an LE, as
B • Cabling
NT
RJ-48C, male
1
2
3
4
5
6
173
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