SmartNode 4940 Getting Started Guide

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 10 on page 50.

WARNING

WARNING

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.

0/3

0/2

 

0/1

T1/E1

0/0

ETH

0/1

Reset

Console

 

RS-

 

232

NT

Cross-over cable

Figure 10. Connecting an E1 PRI port to an NT1

RJ-48C, male

 

 

RJ-48C, male

RX Ring

1

1

RX Ring

RX Tip

2

2

RX Tip

RX Shield

3

3

RX Shield

TX Ring

4

4

TX Ring

TX Tip

5

5

TX Tip

TX Shield

6

6

TX Shield

N/C

7

7

N/C

N/C

8

8

N/C

 

 

*N/C = No connection*

 

Figure 11. E1 PRI port crossover cable

E1 PRI

50

Page 50
Image 50
Patton electronic 4940 manual E1 PRI